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Sequel Hook

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Otacon: Well, Snake, I tracked down the Patriots' Wisemen Committee, but all I found was a note.
Snake: What does it say?
Otacon: "Buy the sequel! Coming soon!"
Snake: Damn you, Kojima!

A Sequel Hook is something in a work that suggests that there is a clear possibility for another story. The MacGuffins may come in threes, the Big Bad might be Not Quite Dead, or, more blatantly, as the story ends another adventure might be shown beginning.

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The original work still has closure but, by leaving minor plot elements unresolved, the writer has made writing a sequel easier. If the audience demand is there, they'll be ready. In fact, this method is so common the audience will identify any unresolved plot element or any ending short of Happily Ever After or Kill 'em All as a hook. Sometimes the hook was just that, the writers are not sure which direction they would be going in the later movie.

Pretty much every film based on a comic book sets itself up for a sequel, and any movie that goes out of its way to establish a very expansive universe that has room for a sequel. In the case of adaptations their source is usually a medium known for making multiple storylines and, in most cases, have a decades-long Myth Arc to mine for ideas.

If the Sequel Hook revolves about a character other than the main character, it may indicate a possibility of Changing of the Guard.

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Make note that a Sequel Hook is not a combination of a Mythology Gag you noticed and wishful thinking. This is where the movie takes a brief side glance to let you know that more is coming. This is recognizable to almost anyone watching/reading, not just the fans that notice a minor gag in an adaptation.

If the story is complex enough, there can be a fine line between this and an outright Cliffhanger. And the two can overlap if the story concludes, everyone's happy and then a new problem shows up to put everyone in turmoil.

If a movie poses a Sequel Hook only for no sequel to ultimately be forthcoming, this can be the source of unintentional humour later on down the track.

Considering that most stories need a conflict because of the Rule of Drama, this trope may often result in Happy Ending Override, Status Quo Is God or All for Nothing if the sequel is made.

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Compare The End... Or Is It?, Here We Go Again!, The Stinger, And the Adventure Continues, To Be Continued, Saved for the Sequel, Sequel Snark. Can occur as part of Inescapable Horror. Obviously, many spoilers ahead.


Examples:

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    Anime and Manga 
  • Back in 2008, the slighly random Kamen no Maid Guy actually set up a serious storyline - at the very end of the series.
  • It had been made clear in Tokyo Mew Mew that Ichigo and friends had been de-powered because there was no need for them to fight. Then, we see everyone back at the cafe months later and, depending which version you're following, either their marks have reappeared and they transform, or Ichigo's cat ears reappear and Berii looks in the cafe window.
  • A post-credits sequence in Strike Witches features Yoshika receiving a letter from her supposedly-dead father. But seriously, who saw the first two episodes and thought he was actually dead in the first place?
  • The ending of Petite Princess Yucie has all the lead girls inexplicably attend the Princess Academy once more, even though they all graduated already. Yucie also seems to be no different as a Platinum Princess. But it's especially clear that a sequel was planned when all the girls shout "see you again" in the last shot. This was in 2003 and there still is no sequel in sight.
  • Higurashi: When They Cry, the end of the first season.
  • Subverted in Fatal Fury: The Motion Picture, when Geese shows up halfway through the film to show us his RAGING STORM... and then is absent for the rest of the movie. Sequel time? Nope, they never made another.
  • Bamboo Blade has Tamaki and a long-haired girl turn their heads to each other in the ending credits. Les Yay aside, this could mean that there is more in store.
  • The six years later epilogue of Magical Girl Lyrical Nanoha A's, which has everyone talking about being reunited after a long time, the three Aces on their way to a mission, the brief introduction of Reinforce Zwei, and the scene cutting away just before said Aces reveal their new Barrier Jackets. All a hook for the A's to StrikerS manga to follow-up on around half a year later.
  • Giant Robo has possibly one of the most sadistic, but not because of any fault of the writers'. The final OVA episode ends with the Earth decimated but able to recover, the IPO gutted of several of its top men, and Smug Snake Koumei informing the Magnificent Ten that all is according to the plan of Lord Big Fire, with Operation BR about to begin, suggesting that Big Fire is about to launch a true operation to conquer the world after Genya's plot both crippled their major opponent and simultaneously made sure the world would survive to be ruled over, leaving it ambiguous as to whether the entire operation was masterminded by Koumei or Big Fire himself. However, the sequel was unable to be made due to funding problems, so several critical explanations and Koumei's presumed come-uppance were never actually made, much to the frustration of the OVA series' many fans.
  • Slayers
    • The last light novel ends with Lina and Gourry traveling to Lina's homeland, Zephilia. Cue loads of Will They or Won't They?. There's also the fate of Zelgadis and Amelia, considering that they were left to their own accord after the eighth novel (their replacements were Killed Off for Real in the last two novels), and Zelgadis' side story takes place after that time.
    • The second anime season ends with Sylphiel running off with the heroes, but she's nowhere to be seen in the third (being replaced by Filia), so this is a subversion. Also, the last season has more of this than the third did, with Zelgadis riding on a boat contentedly sticking out among them.
  • Blatantly lampshaded in Baccano!, when the two Meta Guys Carol and Gustav argue over why some plot threads are left untied (such as a scene in the first episode that never gets referred to again. At least in the anime...). Carol's answer? Sequel Hook.
  • The second season of Hayate the Combat Butler ends with a new semester beginning for the cast, as well as a very brief shot of Athena during the final credits.
  • For Heroman, Kogorr is defeated, and everyone is happy as the episode ends, fading to black. But, then it fades back in to show a prison island, with lights blazing and alarms shrieking. The prison's guards get decimated by Veronica, who frees Those Two Guys, and breaks down the wall to a certain cell, filled to the brim with equations and formulas, as well as drawings. A pencil is spit to the floor as the cell's inmate turns around: Dr. Minami. Cue To Be Continued. We even see a question mark afterwards.
  • Pokémon Special would always use this at the end of an arc. It may seem a little silly, as the release of a new Pokémon generation already indicates a coming sequel, but it is often done to show either the new Big Bad, the direction they'll be heading with the next chapters, or just a way to explain how one arc leads to the next, chronologically.
    • Red/Blue/Green - Averted. It makes sense for the first chapter, though, as there's no way they would've known that a new Generation of Pokémon would even exist (Yellow was out at the end of this arc, not Gold and Silver.) or if they would even continue with the series.
    • Yellow - As part of the story, it's revealed that Yellow's journey had been engineered by Blue (The girl). While her reasons are not revealed, she's shown on her PokéGear calling someone, discussing that she hadn't found what she needed through Yellow's adventure. The next we see is Silver, the rival of Pokémon Gold and Silver, hanging up, and a shot of Johto with a group of Generation II Pokémon as the chapter ends.
    • Gold/Silver/Crystal - Averted again, for some reason or other there is no link to the next arc at the end of this one, everyone just gets a Happily Ever After to the point where it seems like the whole series could just end here.
    • Ruby and Sapphire - HUGE. After the battle, the Red Orb and Blue Orb used to maintain Groudon and Kyogre shatter into pieces. A shadowy figure shows up and picks up the pieces. Holding two red and blue shards, he says, reciting what comes across as a prophecy, "Creation of the new world order lies in thy hands." Next we see Giovanni, standing there with the shards, where his last words at the end of the chapter are "...And it has already begun." Especially shocking as this occurs after a Happily Ever After ending, where almost every loose end is tied up.
    • FireRed and LeafGreen - Arguably larger than Ruby and Sapphire's. After the Big Bad is defeated and the characters all get their just endings, Sird shows up as Mewtwo flies away, using the last amount of energy she could attain for one last attack... Which turns the Pokédex holders to stone. And with that, the arc ends.
    • Emerald - Crystal, looking back at the photographs from the battle, recalls Archie's last words when she confronted him about the origins of his suit of armor. She asks him who gave it to him, but he can only get out the beginning of the word before dying, as his last word is: "Galac..."
    • Diamond and Pearl - So Cyrus has been defeated, Dialga and Palkia are peaceful again, and Platinum has finally achieved her goal of making the Berlitz family crest. Everything should be back to normal now, right? WRONG. She then states her intentions of rescuing her original bodyguards, then a weird scientist suddenly shows up, Byron and the researchers stop him, but they accidentally manage to open up a black hole, where a large claw swoops down and sucks in Dialga, Palkia, and Cyrus. The scientist just grins, tells Platinum his name and about the Distortion World, and escapes. Dia manages to take his notebook from him, which reveals information about the legendaries. Flash forward to Flint and Volkner having a conversation, where Flint reveals that he's in the Battle Zone. Another flash forward two weeks later, where Platinum's mother is on a cruise ship, and she and her daughter have a talk about the Distortion World.
    • Platinum - All is well and everyone has their Happily Ever After conclusion, but we then get a scene with the Daycare Center man begins to have a flashback to another trainer - that trainer being Gold, directly leading into the next arc.
    • HeartGold and SoulSilver - A very unique case, as this arc's Sequel Hook links to the Diamond and Pearl arc, revealing that this arc was a Stealth Prequel to the previous two arcs.
    • Black and White - In the biggest one since FireRed and LeafGreen, Ghetsis escapes, but not before knocking Black backward into the magnetic pull that is restoring Reshiram to the Light Stone. Black says a tearful farewell to White as he is being sealed into the stone along with Reshiram, and after he is, the stone teleports away. White is left to cry and scream for Black to come back, while Ghetsis is left to begin plotting his counter-attack with his mysterious masked colleague, who is revealed to be Mad Scientist Colress. In the last scene, a group of Team Plasma grunts defect from the group and go on the road...one of them being just a child, recognizable as the female protagonist of Black 2 and White 2.
  • Pokémon tends to have these at the end of each era:
    • A trainer from Hoenn appears in the Silver Conference at the end of the Johto era, and this causes the original series ending with Ash travelling to Hoenn. The last episode ends with Pikachu sick.
    • The Hoenn era ends with Gary re-appearing with an Electivire, a Pokemon discovered in Sinnoh and Ash travelling to Sinnoh.
    • Not much is gleaned at the end of Sinnoh for Unova, except for Giovanni's newly-introduced secretary giving Jessie, James, and Meowth a promotion for a mysterious "new project", since their role in destroying Team Galactic had renewed Giovanni's faith in them.
    • The last arc of the Unova era sees Ash, Iris, and Cilan accompanied back to Unova by Alexa, a reporter from Kalos, and her Helioptile, a Pokémon native to Kalos, thus causing Ash to travel to Kalos.
    • Again, very little can be gathered from the end of the Kalos era about Alola, save for Team Rocket dropping souvenir trinkets of Solrock and Lunatone at the Lumiose City airport in the last episode.
  • Panty & Stocking with Garterbelt ends with what is basically an Up to Eleven version of this trope, with sudden, completely nonsensical plot twists thrown out left and right just after everything has been resolved. Basically, Stocking pulling a Face–Heel Turn and slices Panty into 666 pieces, and Big Bad Corset pops out of Brief's penis (It Makes Sense in Context, I swear) to tell Brief that if he wants to save Panty, he must follow the pieces to the next town and unlock the hellgate there. Your typical Gainax Ending, as it were, but taken to eleven.
    • Also, the whole thing may actually just be a parody of this trope; the creators have been very coy about a second season, and it's quite possible they have no intention of making one and came up with an asspull sequel hook just to troll the fans.
      • It's also quite likely that, knowing them, they will make a second season but completely ignore the cliffhanger.
      • Most likely a typical Gainax troll, but who's up for Brief and Chuck with Garterbelt?
  • Mobile Suit Gundam 00. Both seasons. Season one: Setsuna's line: "As long as the distortion continues to exist, I will continue to fight... Alongside my Gundam." Also, Tieria's "This is the Gundam that will change the world..." while we see a container saying "GN 00 00 GUNDAM". In season two, Tieria's "The true goal of the Aeolia Plan was to prepare Humanity for the dialogues to come." And after the Credits, we see a 15 second teaser for the movie, which ends with the text: "2314: The Childhood of Humankind Ends." If those don't practically say "There'll be another season" and "We're planning on making a movie", I don't know what does.
  • The last episode of Puella Magi Madoka Magica, especially The Stinger. The director has stated that he wants to do a second season- though it's unknown whether he wants a genuine sequel or a Spin-Off.
  • Fullmetal Alchemist averts this to the point where it seems like the writer was literally trying as hard as possible to prevent any possible sequel or need for a sequel. The 2003 anime version on the other hand ends with Ed getting ready to do another transmutation to get Al back by sacrificing himself. The Conquerers of Shamballa movie fittingly picks up a short time after the hook, with Ed stuck in the "real" world after his transmutation was successful.
  • The creators of Death Note have themselves admitted that they are undecided whether The Death Note that Aizawa was holding at the warehouse was real, or if Light's bluff about it being fake was true. They claim that if the book was a fake, the real one is still out there somewhere, meaning "Ryuk could return somehow..."
  • In Pretty Cure All Stars New Stage, when Ayumi returns to normal from being Cure Echo, the uniform's bow drops off, turning into a Cure Decor, the MacGuffin for Smile Pretty Cure!, but it is never picked up by either Ayumi nor the Smile team. While she only makes a cameo in New Stage 2, she comes back for good in New Stage 3, wearing the Decor as a pin and being able to use it to transform.
  • In the 13 and a half episode (no, seriously) of Tenchi Muyo!, after Mihoshi and Washu have their talk and we see what Washu's doing to Ryoko, we're cut to a scene where D3 is talking to Tokimi and we see a mysterious figure in the shadows. That figure, Z, would show up in the third season.
    • As well, in episode six, we're introduced to Washu, who's Ryoko's "mother" and is incredibly smart, and Tsunami, who has a major connection to Juraians and Sasami in particular. Both of those are explored more in the first two episodes of the second season.
  • Tiger & Bunny had the Ouroborus symbol appearing on a Stern dollar at the epilogue of episode 25. Also, Kotetsu and Barnaby coming out of their retirement and joining the Second League Heroes.
  • In the final episode of High School D×D, Sirzechs and Grayfia were discussing about how the Red Dragon Emperor (Issei) is now part of the devil society. It seems they were happy about Issei crashing the wedding until Grayfia mentions that the Vanishing Dragon will make his appearance. Cue the second season of the anime.
  • Double Subverted at the end of part 1 of JoJo's Bizarre Adventure. Dio is defeated, Jonathan and Erina are married, they're boarding a ship to America for their honeymoon, everything points in the direction that the story is now ending. Oh, some guys are carrying a treasure chest onto the ship with a still-alive Dio in it, how cute. Hang on, we're seeing what happens right now? Hold the phone, did Dio just kill Jonathan?! Well, darn, that's a bit of a Downer Ending... wait, Erina is pregnant with Jonathan's child? The Joestar legacy lives on! Rejoice!
  • Space Dandy's hell of a second season finale closes out with a card reading "May be continued?"
  • Tokyo Ghoul infamously concluded the original series with a sudden and shocking ending filled with these, before announcing the sequel roughly a month later. The final chapter of the original series was almost nothing but this trope, setting up the sequel with hints of Kaneki becoming Amnesiac Hero Haise Sasaki, Aogiri and Dr. Kanou beginning new experiments using Yoshimura and captured Ghoul Investigators, Touka declaring her intention to wait for Kaneki to return, The Reveal of the Clown Gang, and Tsukiyama falling into an Angst Coma. The result of these hints is Tokyo Ghoul: re.
  • Brave10 ends with the Five-Bad Band defeated and the Braves at last united, but Date Masamune spends his last scene exclaiming about how any setbacks don't matter because a great war is coming, and while calmed down for now, Isanami's Super-Powered Evil Side is shown wrapping its arms around her in the last panel.
  • Love Live! had one where Hanayo gets a text, before announcing the spinoff series Love Live! Sunshine!! two years later.
  • Unlike Dragon Ball Z, which had a definite (albeit open-ended) ending, Dragon Ball Super—in particular, the first batch of episodes—ends like this, with Goku telling Jiren that he wants to fight him again and Frieza rebuilding his empire after being brought back to life. The next part of the series begins in Dragon Ball Super: Broly.

    Comic Books 
  • A comic book example is found in the six-issue Marvel Boy limited series from 2000. At the end, Marvel Boy ominously tells the government agents that in five months, the super prison he is in will become the capital of the new Kree Empire. After that, the caption advertises Marvel Boy 2:001!!!, a title that will likely not see the light of day, since Marvel Boy's next appearance was during the 2006 Summer Event Civil War.
  • P.R.O.J.E.C.T.'s "Superman 2" vault at the end of All-Star Superman.
  • Ultimate Marvel
    • At the end of Spider-Men, Peter makes it back to his own universe and starts wondering if his dimension has a Miles Morales (the new Ultimate Spidey). We don't see the results of his web search (until Spider-Men II, that is), but Peter is stunned.
    • Ultimate Wolverine: Quicksilver, laying in a hospital bed, is recruited by someone for something. To be continued in... Ultimates: Disassembled!
  • The Black Knight: At the end of The Black Knight, the nephews find Lusène's calling card in Scrooge's trophy room promising his return. At the end of The Black Knight Glorps Again!, Lusène is last seen observing his suit of armor traveling in orbit around the Earth through a telescope.
  • Shakara: After Shakara's Heroic Sacrifice to destroy Cinnibar Breneka and the universe returning to a state of relative peace, the last pages show a new yellow-colored Shakara crash-landing on a planet in another reality.
  • Stunt Dawgs: Parodied. When the Stunt Scabs flee in the end of a comic book story, the last thing their leader says is "Set up a sequel!"
  • The Dreamwave Mega Man (Classic) comics end on a hook for a Mega Man X series, specifically X traveling back in time to 20XX to enlist Dr. Light's help for (presumably) the Maverick war. Dreamwave's financial collapse meant that no Mega Man X ongoing would ever be made.
  • Justice League/Mighty Morphin' Power Rangers ends with the Wham Shot that Brainiac has survived his apparent destruction by infecting Alpha 5.

    Fan Works 
  • The ending of the To Love-Ru fanfic To-Love-DEATH ends with a zombie invasion though several characters have escaped the school by helicopter. The city is in chaos and the story leaves them still in the chopper. Not to mention the author announces the sequel imminently afterward "See you in To-love-Carnage!"
  • Most of The Ghost Map's final chapter is a Sequel Hook, with Sherlock Holmes, Dr. Watson, and Inspector Lestrade fully aware now that Moriarty is out there and will be returning. But it's the final scene with Moriarty himself that really clinches it.
  • At the end of With Strings Attached, the four (especially Ringo) ask to be given another opportunity to use their magical bodies.
  • My Little Avengers: After the "Where Are They Now?" Epilogue showing what's happened to all the characters in the year following Loki's defeat, the last scene shows Trixie essentially becoming the MLP version of Doctor Doom and swearing revenge on all who have opposed her.
  • The last chapter of Mortality sets the stage for the next novel, The Road to Reichenbach, by showing Sherlock Holmes receiving an offer from the French government (as mentioned in "The Final Problem"). The epilogue goes on to sum up the characters with the Reichenbach Falls used as a motif.
  • The coda of The Stars Will Aid Their Escape reveals that Nyarlathotep impregnated Fluttershy as a backup plan.
  • Post Nuptials, the first story of The Nuptialverse, deals with the emotional fallout of Twilight's friends not believing her in "A Canterlot Wedding", and while most of it is dealt with, Spike still feels incredibly guilty and won't speak to Twilight. Meanwhile, Rainbow Dash senses something is wrong with Scootaloo, and Pinkie is dealing with her own family issues. All of these problems are dealt with in the sequel Families.
    • The side story Metamorphosis ends with Chrysalis swearing revenge on Twilight, Shining Armor, and Cadance.
    • Families ends with Discord contacting Chrysalis in a dream and ordering her to meet with an "associate" of his in order to plan his release. Meanwhile, relations with the dragons are now tense due to Garble's actions, and on top of that, several canon Season 3 events are alluded to (Trixie plotting her revenge, the reemergence of the Crystal Empire).
  • At the end of Earth and Sky, Chrysalis is still on the loose, and has embarked on a scheme to replenish her strength by becoming a beloved foal actress.
  • Hard Reset dangles one of these by way of a Cryptic Conversation.
  • In the Total Drama story Courtney and the Violin of Despair, Courtney acquires the similarly cursed Violin of Doom at the end of the story. Subverted in that the story's closing note of uncertainty is actually a nod to the sci-fi classics of the 1950s, which tended to leave room for a sequel despite there being no plans for a sequel. So far as is known, the author has no plans to actually write a sequel (which would obviously be titled Courtney and the Violin of Doom); but he has stated that if he ever does, it might be something like The Perils of Pauline and would probably be openly pro-Courtney as opposed to the revenge fic subversion of the original.
  • Faith and Doubt ends with the words "End of Volume 1" and credits. It then cuts to the five remaining elements of harmony discussing their plans to invade Equestria and take over the bodies of the Bearers.
    • The sequel, The Abundance, does it again: Everything is wrapped up and the characters get a happy ending... except Princess Celestia and Luna's adopted father, Lord Tydal, escapes from the afterlife to warn them that the precursors to the ponies are coming and will be bringing hellfire with them.
  • The Justice League of Equestria series has a setup of each story having two sequel hooks — one for each individual story's potential sequel, and the other being part of the setup for the eventual main crossover between all the storylines:
    • Mare of Steel: First, there's the fact that Silversmith is still free, and has samples of Supermare's DNA to experiment on. Then, the last scene shows Darkseid opening a boomtube to Equestria.
    • The Princess of Themyscria: Ares, defeated by Diana and now trapped in Tartarus, meets Circe, setting up a future Villain Team-Up. And then the last scene has Athena revealing to Hippolyta that Ares opening a portal to Tartarus has created a crack in reality that Apokolips can take advantage of.
  • The New Look Series has a couple of these.
    • Link's New Look 1 ends with Peach calls Toad to pick up some stuff that she plans to use on Link in the near future.
    • Sonic's New Look 1.5 ends with Sonic leaving with his makeover undone, but Rouge has the security footage on the day's events and has plans for them.
  • Examples from The Calvinverse:
  • Shadows Awakening: The epilogue involves Captain Black recruiting the J-Team to head a new subdivision within Section 13 dedicated to magical threats, Tohru becomes a full chi wizard and takes on Jade as an apprentice, and in the last scene, Daolon Wong's apprentice emerging to take control of his resources, and the Big Bad mantle.
  • MLP Next Generation: Know Fear! ends with three hooks: Starburst dedicates herself to continuing to fight the war, even as a renegade; meanwhile, unknown to her, Nox is raised as a Black Lantern; and in the final scene two more power rings — one Orange, the other Violet — arrive on Equestria.
    • The sequel likewise ends with three hooks: first, there's a self-exiled (and still partially corrupted) Nidra joining up with Starburst, then there's Annie deciding to keep fighting to protect Equestria, and finally, two more rings — one Red, one Indigo — arrive in orbit, but pause there due to complications in finding hosts.
  • The Planet of the Apes and Cat Planet Cuties Crossover fanfic Planet of the Cats ends with the possibility of exploring more of the titular world beyond where even the Catians have gone.
  • Aftermath of the Games ends with Sunset and Sci-Twi now working with Princess Twilight to discover how magic works in the human world before it becomes too widespread and noticeable, Princess Twilight is now able to talk to the Human Flash Sentry more with a magic journal just like Sunset has, and and the now-unemployed Cinch is approached by Miss Chrysalis to discuss a common interest in magic.
  • Child of the Storm, intended as the first book in a multi-volume series, ends with a number of dangling plot threads: while HYDRA is defeated, a number of its leaders escape to rebuild, while their threat causes the governments of the world to start their own superhuman programs (including the resurgence of the Red Room). Chthon's temporary rising is causing various evils around the universe to stir. A resurrected Voldemort strikes an alliance with Selene. And all the while, as Doctor Strange foretells, Thanos is waiting in the wings.
  • The epilogue of Entities Of Emotion is very much a stinger, showing the Death Entity resurrecting King Sombra and taking him as a host, setting the stage for the Blackest Night to fall on Equestria.
  • At the end of Extremely Naughty, Adrien's mother returns, And she has a little girl too, signaling the start of Extremely Nice.
  • Empathy ends with the National Super Agency deciding to recruit the Big Hero team to work under the Anti-Villain League and a mysterious villainous figure visiting Callahan in jail and forcibly recruiting his services. This leads into Unity.
  • Convergence ends up with Talia al Ghul bringing Jason Todd Back from the Dead in order to make him escort her son Damian to Batman while she betrays her father.
  • Several of the Expanded Universe one-shots of Pokémon Reset Bloodlines can end this way:
    • Cynthia Gaiden ends with Cynthia looking forward to exploring an uncovered ruin in the Orange Islands after the weather at Shamouti stabilised.
    • Clay Interlude ends with Team Cipher having succeeded in saving Lovrina and being pleased with the power of the Shadow Pokemon demonstrated when Lovrina clashed with Clay and them moving forward with their plans.
    • Argenta Interlude featured the first appearance of Mitsumi, which leads directly into her role as a protagonist in The Wild Boy from Sinnoh.
    • Cipher Interlude ends with The Reveal that Mizutaro was turned into a Shadow Pokemon.
    • Astrid Gaiden ends with Astrid accepting Mabel's offer to train under her.
    • Guzma Interlude ends with Guzma making a phone call to Lusamine.
    • Sanpei Interlude ends with Capriccio promoted to Admin and assigned to plan and oversee a full-scale operation in Alola.
    • Kiawe Interlude ends with Capriccio and Naps preparing for the full-scale Alola operation and Capriccio planning to capture Darkrai for Team Cipher in exchange for help finding and killing all his nieces and nephews.
    • Blaine Interlude ends with Al, Ken & Harry of Team Rocket finding what they were looking for and reporting back to Giovanni.
    • Hala & Hau Interlude ends with Hala and Kukui preparing to establish Alola's Pokemon League.
    • Looker Interlude has two. The first is Blake being on Team Cipher's trail and assigned to Orre. The second is Koya having a lead on Newton's disappearance, that he was talking to a man named Kaisei.
    • Wicke & Nephew Interlude has Hala inform Frax and Velvet that the time has finally come for their Grand Trial.
    • The G-Men Interlude leaves three: Krysta being assigned to recruit a vigilante bloodliner trio for their ranks, Lance getting a call from Clair that his father wants to see him, and Frey calling Lorelei to meet up and spend some time together.
    • Jane Jackrum Interlude ends with Professor Hastings contacting Professor Oak with an idea to bring peace to Trainer and Ranger nations.
    • Steven Interlude ends with the title character contacting Lysandre, requesting for help in searching for the Megalith shards to prevent them from falling into the wrong hands.
    • The Melemele Grand Trial Interlude ends with two, ranging from the minor bit of Frax possibly about to capture a Hawlucha, to the more serious bit of Lusamine detecting Cosmog and calling for Zilant to find it for her.

    Films — Animated 
  • The Adventures of Tintin combines this with The Adventure Continues, when Tintin shows Captain Haddock the scroll he discovered in the globe where Sir Francis kept his treasure, leading to the rest of the Unicorn's treasure.
    Tintin: How's your thirst for adventure, Captain?
    Haddock: Unquenchable, Tintin!
  • An American Tail ends with Fievel riding on the back of his pigeon friend Henri. When he looks to the west, beyond New York City, and asks if he can explore more of America, Henri replies "Someday, you will!" This scene was replayed at the beginning of the trailer for the sequel, with the voice-over declaring "That day... is now!".
  • The Challenge Of The Gobots movie GoBots: Battle of the Rock Lords had Magmar, leader of the malevolent Rock Lords, survive his battle against the Guardians and the benevolent Rock Lords and vowing revenge as well as Boulder, the leader of the benevolent Rock Lords, state that he's sure they'll meet the Guardians again someday.
  • The Incredibles ends with The Underminer arising from the Earth's surface and threatening an all-out war against humanity; the film's sequel, Incredibles 2, picks up from this exact place in the story, while ending on a similarly cliff-hanging note at the end.
  • Kung Fu Panda: In hindsight, the blatant Unreveal of why Po the panda has a goose for a father could be considered the Sequel Hook for the first film, this question finally being answered in the second.
    • Kung Fu Panda 2, however, ended on a definite Sequel Hook with The Reveal that Po's biological father and several other pandas survived the genocide of their kind.
  • The Lion King has Simba and Nala giving birth. It works as a Bookends, as it's how the film started and continues the theme of the Circle of Life, but it also sets up a new character for the following film.
  • The Stinger at the end of My Little Pony: Equestria Girls – Rainbow Rocks features Human Twilight Sparkle's investigating the magical happenings at CHS, setting up the third film.
    • Just before the credits roll in My Little Pony: Equestria Girls – Legend of Everfree, Sunset wonders where the Equestrian magic that hit the rock quarry cave came from. Cue a shot of the portal to Equestria, still cracked from the events of the previous film, leaking several colorful swirls of Equestrian magic, setting up the magic source for the major villains of the upcoming specials and future Equestria Girls movies.
  • Invoked at the end of The Rescuers where the child in distress at the end of the film is actually implied to be from Australia.
  • Parodied in The Simpsons Movie, where the family is watching the credits at the end. Maggie's first word is "Sequel."
  • Subverted in Superman: Brainiac Attacks; after Superman finishes pummeling Brainiac's body into scrap, the chip that remains of the original Brainiac is seen ominously blinking amidst the wreckage... until Superman's fist comes down on it, smashing it to pieces.
  • Played straight in Superman: Doomsday, though: Lex Luthor, having been seemingly killed by the Superman clone earlier in the movie, turns up in a body cast at the end, musing over whether or not Superman is really impossible to destroy.
  • TMNT ends with Karai suggesting a familiar face from the past will return, suggesting a sequel to the 2007 film will feature the return of The Shredder, who hasn't been in movie-verse since 1991's Teenage Mutant Ninja Turtles II: The Secret Of The Ooze.
  • Toy Story has "wow, a puppy!" Toy Story 2 has "worried about Andy?" Toy Story 3 avoids this. Even so, there will be a Toy Story 4.

    Literature 
  • The first book of the Ahriman Trilogy has one of the more obvious ones: "And she was going to summon a god."
  • Dante Alighieri:
    • In Canto 5 of Dante's Paradiso, Dante asks the identity of a supernaturally glad soul from Mercury, only for the narration to tell us that this soul will only sing in the next canto.
    • The Vita Nuova ends with a reference to an unseen vision which inspires the poet to praise his deceased beloved in ways never achieved before. Nine years later, that inspiration would bear fruit with the first canto of the Inferno.
  • The Death Note novel Another Note: The Los Angeles BB Murder Cases has a note by the narrator in the final chapter saying that, if he had more time, he would write about two other stories L told him. A pretty blatant set-up for more novels like it.
  • Each book in J.R. Ward's crack-like Black Dagger Brotherhood series features a Sequel Hook embedded as the B- or C-plot of the current book. You'll be fiending for the next book before you've even finished the one you're on.
  • Dale Brown has various hooks in his book-endings. For example, Battle Born ended with the Dreamland staffers offering Rebecca Furness command of a new unit, while Air Battle Force ended on the then Russian president threatening another war with the Americans.
  • The end of the comic neo-noir City of Devils has Nick's next case coming through the door: the witch Hexene Candlemas, hiring him to find her toad. The sequel does in fact follow up on this hook and sets one up of its own, with the LAPD hauling in the private detective to work for them.
  • The epilogue of Crime and Punishment warns that the redemption of Raskolnikov, now enduring the punishment for his crime, will not be given to him for free, that there is suffering ahead before his eventual renewal and discovery of a life he never new existed... but that's another story for another time.note 
  • Daemon ends with Sebeck and companion setting off on a road trip across America, leading into their part of Freedom.
  • The Dinosaur Lords clearly likes its sequel hooks.
    • In book one:
      • Melodía going towards Providence to hide from Falk.
      • Karyl and Rob getting thrown to jail in their last scene.
      • The Emperor implying that his confessor knew about Falk's plan all along.
      • Most of all, the Cryptic Conversation between Raguel and Uriel.
    • Book two manages to trump all that with the last-scene reveal that Emperor's confessor was a Grey Angel all along.
  • All three of Terry Pratchett's Moist von Lipwig Discworld novels contain sequel hooks, but only the first one of them was picked up on. In Going Postal, the Patrician Lord Vetinari is seen making an offer to one Reacher Gilt to reform the Royal Mint in the same manner as the Post Office had been in the book. This task was eventually undertaken by Lipwig in Making Money, and at the end of that one Vetinari muses how useful an asset Lipwig has proved to be and also how the City's tax system is in dire need of reform. But the third Lipwig novel turned out to be Raising Steam, and is about trains rather than taxes. It ends with a Goblin inventor showing the Patrician his new prototype bicycle. This hook never got used due to Author Existence Failure.
  • Two examples from Distortionverse:
    • The last section of Chapter 5 - Rumori di Fondo in which it is revealed that doll #4 is still alive.
    • The ending of Chapter 2 - Rosenmaester, which is the connection between this novel and the previous one. In the last chapter, the Big Bad is seen wandering through the city in a semi-unconscious state, while actually still being alive. This actually makes sense, since Chapter 1 - La Notte che Cammina is set one year later than Rosenmaester.
  • Happens several times in the Dora Wilk Series:
    • Gods Must Be Crazy ends with Raphael declaring open war with Dora.
    • Winner Takes It All has the Trio find out about some unspecified vampire problem and setting out to solve it.
    • Exorcisms of Dora Wilk closes with Dora having a dream of Varg being kidnapped.
  • Quite prevalent in The Dresden Files:
    • Changes had Harry getting shot and dying as the last scene in the book.
    • Ghost Story has Harry set to head to the Sidhe Court as the Winter Knight to do as Mab bids, leaving his friends not knowing that he did not die.
  • The epilogue-like last chapter of Ender's Game is titled "Speaker for the Dead," and was written to set up the identically-named sequel to the book.
  • On the last page of Foundation and Earth, Isaac Asimov sets up a sequel (in a way that is somewhat difficult to summarize briefly or without massive spoilers). Unfortunately, he didn't actually have any definite ideas for that sequel and he died before he could come up with one.
  • The explicitly referenced buildup of magic at the other end of the Grand Bow River in Patricia C. Wrede's Frontier Magic.
  • The Girl from the Miracles District:
    • The first book ends with Nikita finding a note telling her to find "the truth" in a distant location.
    • The second book's ending has Nikita telling Robin that she knows a guy who can get them to the Archive, where the secret of Robin's identity is hidden.
  • After the Philosopher's/Sorcerer's Stone is destroyed at the end of the first Harry Potter book, Dumbledore says that there are still other ways Voldemort can return. Voldemort spends the rest of the series proving Dumbledore right.
    • Harry Potter and the Half-Blood Prince ends with Harry deciding to leave Hogwarts to find and destroy the Horcruxes that will make Voldemort vulnerable, which tells the reader that the series' traditional formula will be thrown by the wayside for the final installment.
    • Some fans really hope that the controversial epilogue is one of these, despite the author saying that it is not.
      • It's practically an anti- sequel hook, since it seems to only exist to assure us that they all lived Happily Ever After.
      • It could be a sequel hook in the sense that it introduces a new generation of characters. But it doesn't set up any kind of continuing plot.
  • The last chapter of the first book of The Hitchhiker's Guide to the Galaxy is essentially an advertisement for the Restaurant at the End of the Universe. The place was encountered in the radio series immediately after the episodes adapted into the first book; the second book was indeed named The Restaurant at the End of the Universe but did not reach the Restaurant until the middle. It's been claimed that the last chapter was added on by the editors to wrap up the completed pages after Adams missed his deadline.
  • Believe it or not, J. R. R. Tolkien adjusted The Hobbit in a later edition to help it be the prequel of The Lord of the Rings. Which would make it a Retcon Sequel Hook. In the first edition, Gollum was honest in the riddle game and showed Bilbo the way out of the caves in recompense when he realized he could not give him the ring.
  • Imminent Danger And How To Fly Straight Into It ends this way, with Eris deciding to leave behind her life on Earth, and return to exploring the stars with Varrin. The villains have been defeated and the heroes look set to live happily ever after... and then Eris learns that the pendant Varrin gave her means they are now technically married. And she's not happy about it.
  • The hook involved with the Kang's Regiment books is rather unusual in that it's not only in the second of the existing books (that number itself implies a third volume, because Dragonlance multi-part novels almost always come in groups of 3) but in the ending of the War Of Souls trilogy. In Draconian Measures, the city Kang is trying to reach so he can found a Draconian civilization is named Teyr. The readers know from material set chronologically later that Teyr is a Draconian city, and there's an interesting bit in Dragons of the Vanished Moon where a bunch of Draconians from Teyr show up and fight against Takhisis and her forces (keep in mind, Kang starts out as a faithful servant of Takhisis, so this is a Heel–Face Turn for him). Two unnamed but familiar Draconians appear among the collection of enemies Takhisis magics to her to watch the moment of her triumph, as well.
  • Jurassic Park ended with one of these where Dr. Grant, being kept in Costa Rica by their government who was still investigating the Isla Nublar incident, is approached by an agent of the U.S. government about a path of destruction being carved through South America by a group of 'strange reptiles' that are swarming farms and devouring plants with lysine, the amino acid Hammond had all the dinosaurs bred to be dependent upon. Unfortunately this hook was ignored and the followup book was a sequel to the movie.
  • In MARZENA during the final dream sequence of Book 1, Lauren must chase after the shadow of a woman with black hair, going through a rain of fire, ice and blood and other weird alien symbolism. The Narrator, who we have never met in the book and who we know almost next to nothing about, admits at the end that the shadow woman was her and that Marian was once like a sister to her. We still know next to nothing about their relationship.
  • Murderess ends with the introduction of a character named Tyler Killer, who is apparently very evil and probably not too bright, but extremely dangerous nonetheless.
  • Myth Adventures: At the end of Hit or Myth, Skeeve reveals to Aahz that their new residence has a hidden, heavily-padlocked back door to an unknown dimension. Sure enough, they find out what's on the other side in the next novel, Myth-ing Persons.
  • Parellity ends with the main plot hook resolved, but some hanging threads, including Atlantis, what plans Abend has for Harborage and the gang, and everything to do with the Vaccine. Not to mention whatever the fuck was going on in chapter one.
  • The epilogue of The Radiant Dawn sets up for a potential sequel involving the alien race aboard the orbiting ship.
  • In the Rainbow Magic series, the Weather Fairies series ended with the girls receiving the fairy lockets, which promised many adventures ahead.
  • Rendezvous with Rama: After a mysterious alien object passes through the solar system, the book ends with the portentous sentence, 'The Ramans do everything in threes'. (Whether or not a second Rama, let alone a third, is presented in the sequels at all is debatable.)
  • Rick Riordan:
    • Percy Jackson and the Olympians has a not so prominent one at the end of the last book, when the new resident Oracle spouts another prophecy. Though it is almost immediately Hand Waved with a "who knows when it could happen or if it's even about you guys" speech, it's pretty obvious that it will lead to a sequel series, which it has.
    • The Heroes of Olympus has a Sequel Hook in every installment besides the third, which is a straight up cliffhanger.
      • The Lost Hero's ending has Jason deducing that Percy is at Camp Jupiter.
      • The Son of Neptune ending has a holographic scroll made by Leo being found by Percy, as The Argo II flies into Camp Jupiter, signalling that the Seven spoken of in the Prophecy of Seven are about to unite.
      • The House of Hades has the looming threat of Gaea rising on August 1st and Nico, Reyna, and Coach Hedge going on a journey to shadow travel the Athena Parthenos back to Camp Half-Blood.
      • The Blood of Olympus ends with Apollo being teleported to Olympus for an unknown punishment by Zeus. Meanwhile, the Oracle's gift of prophecy is still unable to be accessed by Rachel. Both of these lead into The Trials of Apollo.
  • Thursday Next is full of these, but they're so tongue-in-cheek and playful, they don't even seem like marketing gimmicks. One happens at the end of First Among Sequels, when Thursday discovers that since someone has been trying to get rid of literary serials, there's a serial killer loose in the Book World!
  • At the end of The Ultra Violets book 2, Power to the Purple, it's revealed that Opal and her mother have samples of the Iris's, Scarlet's, and Cheri's hair at BeauTek. Given the company's reputation for reckless genetic engineering, this is very worrying, to say the least.
  • During the course of James Swallow's Warhammer 40,000 novel Red Fury, Fabius Bile obtained some of the "sacred vitae" from the Blood Angels. During the Dénouement, Dante informs Rafen of this, and sends him after it.

    Live-Action TV 
  • Agents of S.H.I.E.L.D.: Season 1 ends with quite a few dangling threads for Season 2 to pick up on: Coulson is now Director of S.H.I.E.L.D. and tasked with rebuilding the organization after the HYDRA infiltration; meanwhile, he has started to compulsively draw the same alien symbols that Garrett did after taking the GH325 serum. Fitz, meanwhile, is left in critical condition after his near-Heroic Sacrifice, with his future uncertain. At the same time, both Quinn and Raina escape Garrett's downfall, the former still in possession of the gravitonium, and the latter getting in touch with a mysterious figure who is apparently Skye's father. There's also a nice subversion, where Garret starts to augment himself with cybernetic implants after everyone assumed he was dead. Right as it seems like he's going to be an even bigger threat for the second season, Coulson pops out of nowhere and casually vaporizes him mid-villain speech.
    • Season 2 ends with Coulson tasking Skye with putting together a team together to deal with the rise of the Inhumans, and Simmons being absorbed by the Kree artifact.
    • Season 3 ends with a six month Time Skip, revealing that in the interim, Skye has gone rogue and become a vigilante, and is being chased by Coulson, who is no longer Director of SHIELD.
    • Season 4 ends with Team Coulson being abducted by mysterious government agents and finding themselves in space.
  • Arrested Development ends with Maeby meeting with director Ron Howard and pitching the story of her family as a TV show. In an obvious bit of foreshadowing, the final line of dialogue has Howard saying the story might work better as a movie. Sure enough, the series has been Un-Cancelled for at least one season by Netflix.
    • The new season itself ends with a number of hooks for more episodes, such as George Michael apparently having impregnated a woman in Spain, Buster being accused of murdering Lucille 2, the web vigilante group Anonymous coming after the family, and Lindsay getting into politics.
  • Doctor Who:
  • At the end of the first season of Emerald City, Jane sends Dorothy back to Kansas against her will, but later Lucas comes to take her back to Oz because Jane has been taken prisoner by the Beast Forever.
  • Season 1 of Happy! ends with a stinger wherein Zombie!Mikey visits Mr. Blue in prison and finally delivers the password to him. This results in him becoming possessed.
  • After Hiro Nakamura defeats Adam Monroe, he's shown trapped in a coffin, still alive; a clear indication that the character would return to menace the Heroes at some point later.
    • Also, Sylar's body disappearing at the end of Season 1. Heroes loved this trope.
  • The first season of Lexx ends with the heroes slaying the Gigashadow and escaping into the Dark Zone ready to find a new home. As Xev embraces Kai, the camera zooms in on his face and a shadow flickers across his eyes...
  • Merlin: Arthur's gone, but there is that legend of how he'll return when Britain needs him most. Plus, Merlin's still alive in the present day...
  • The eleventh episode of Once Upon a Time season 3 seems like the series finale — until a Sequel Hook is brought by - who else - Captain Hook. A Sequel HOOK.
  • The second season finale of Pretty Little Liars ends with Mona being revealed as A. The scene ends with her sitting alone in a room in The Radley before telling someone in a red coat "I did everything you asked me to."
  • At the end of the Red Dwarf episode "Polymorph", after the crew defeats the eponymous creature, it is revealed that a second one has made it on board. Subverted in the remastered version, in which on-screen text reveals that this one, much less intelligent than the first, took up residence harmlessly in Lister's underwear drawer and eventually died of old age. Doubly subverted by the episode Emohawk: Polymorph II three series later in which they meet another one.
  • Root Into Europe: The final episode has Mr. and Mrs. Root consider going on vacation to the United States next, but this hint to a sequel never came about.
  • Scream: Season 1 ends with the reveal that Audrey was working with and/or for the defeated and killed Ghostface killer all along.
  • At the end of Slasher season one, the mystery of the Executioner's identity has been solved and Sarah's house is being shown to its new tenants, a couple and their young daughter. In the last scene, the little girl casually breaks a cat's neck.
  • Stargate SG-1 specifically left the door open on the Ori threat in its final episode, for the express purpose of setting up the follow up movie The Ark of Truth.
    • Word of God is that they were, for the first time ever, not expecting to be cancelled, so they didn't wrap up the current plotlines. Oops.
  • A television show can do this with its story arcs; alerting you that just because the episode ends, the plotline will continue. Take the Star Trek: The Next Generation episode "Q Who". The Enterprise has narrowly escaped The Borg by the skin of their teeth. As Captain Picard and Guinan discuss their near-defeat, Guinan points out that humanity was never supposed to encounter them (the Borg) that early. But since they have....
    Guinan: Of course, now...they know of your existence.
    Picard (with understanding dawning): They're...coming...
  • The Wrong Mans: The car bomb at the end of series 1.

    Mythology 
  • Older Than Feudalism: In The Odyssey, the prophet Tiresias tells Odysseus that he must make another journey after returning home, but this was not followed up on by Homer. That journey only appears in the lost Telegony, the last epic of the Trojan Cycle.

    Podcasts 
  • The first arc of the Cool Kids Table game Small Magic ends with the party reaching a windmill and finding a statue holding the spirit of…an oni? A tenshi? The spirit praises the kindness they've demonstrated and enlarges Byrb, allowing them all to fly to the Heavenly City.

    Theatre 
  • Henry IV, Part 1 ends with news that Northumberland and Archbishop Scroop are arming for war.
    • You'd think the "Part 1" in the title would kind of give away that a sequel was intended as well...
  • Henry VI Part 3 ends with Richard of Gloucester's (the future King Richard III) monologue where he talks about how he'll do anything to gain control of the crown- setting up for "Richard III".
  • Twelfth Night end with Malvolio pledging "I’ll be reveng’d on the whole pack of you!" which looks like a good setup for a tragedy to follow this comedy. Sadly, Shakespeare never did anything with it.
    • It has been argued that the sequel this set up was the real-life closing of the English theaters by the Malvolio-like Puritans.

    Visual Novel 
  • Umineko: When They Cry provides one in the 8th Tea party. And a few years later, plans for a third When They Cry series were indeed anounced for after the end of Rose Guns Days, so likely 2014.
    Lambda and Bern: We'll meet again… when something else cries.
  • Danganronpa has a particularly plot twisty one where after Junko Enoshima (the Big Bad) is executed, Monokuma (who she was controlling) gets up and asks the viewer if they really thought that was the end.

    Web Original 
  • The KateModern special "Precious Blood" ends with "Precious Blood: 10:30PM", which shows that Terrence is still alive and has killed the Watcher.
    • At the end of "The Last Work", Julia swears revenge on the K-Team, and some of them say they still want to fight.
  • The lonelygirl15 Grand Finale "The Ascension" is followed by a short surprise video revealing that Lucy is still at large.
  • Subverted in the Homestar Runner cartoon, DNA Evidence. In the end, it turns out that Strong Sad had the DNA Evidence all along, and then laughs maniacally... and then it turns out that Homsar was there, watching him. Somebody unfamiliar with Homestar Runner would guess he'd tell everybody the news, right?
  • At the end of The Cartoon Man, both Roy and Karen are cartoonified, while Simon and Valerie get sucked into the Second Dimension. Both plot points play a major role in the follow-up, which itself ends on a major Cliffhanger.
  • Dusk's Dawn: We never see what happened to the antagonist, or when the protagonists went to Celestia. However, a new production hasn't been made in years, so it's either been abandoned or stuck in Development Hell.
  • At the end of Ruby Quest, minor character Daisy (who was killed pretty early on) wakes up in the same situation as Ruby did in the beginning of the quest, opening up the possiblity that she'll be the protagonist of the next attempt to escape the Metal Glen.
  • Atop the Fourth Wall: At the end of the Sleepwalker storyline, a page appears on Linkara's chair saying that he's invited to "A Contest of Champions".

    Webcomics 

    Western Animation 
  • Zuko's question to Ozai at the end of the Avatar: The Last Airbender Grand Finale: "Where is my mother?"
    • It did technically lead to Sequel Series The Legend of Korra... but it takes place over 70 years in the future and most of the former cast is dead. The first episode even trolls the audience about the hook, with a character asking about it and the explanation being cut off.
    • There's also The Promise, a graphic novel Interquel trilogy set one year after the end of the War; in first installment, we discover the end of the conversation started by the above hook - which answers absolutely nothing. It even ends with the exact same sequel hook, only Zuko is now asking Azula about Mom instead of Ozai. Thankfully, the next comic interquel, The Search, has this plot hook as its central premise, so we'll finally get some closure.
      • And then The Search saddles us with some more: Azula has escaped, and it's unclear whether she'll be redeemed. Also, Zuko and Mai are still broken up, despite Korra showing us that he had kids.
  • Batman: The Animated Series did this all the time, particularly in any episode introducing a new villain. There would always be a line at the end in which Batman suspects he hasn't seen the last of the new foe. Perhaps most blatant is the ending to the Ra's Al Ghul two-parter, in which Ra's falls into the Lazarus Pit and is presumed dead, but the final shot shows a hand rising up out of the pit while maniacal laughter is heard.
  • BIONICLE: The Legend Reborn ends with Mata Nui and the other heroes discovering that uniting the settlements of Bara Magna (literally, by pulling them together) creates a Humongous Mecha and that the patterns on a stray coin and on the shield of a defeated Skrall soldier depict a map. They set out to find where it leads, with Mata Nui's friends determined to accompany him... and the toy-line got canceled, the sequel scrapped, so the story had to be wrapped up in a comic in which Mata Nui left his friends behind due to the page-limit.
  • Subverted in Danny Phantom with the episode "The Ultimate Enemy", where the Big Bad is shown to be contained, but not entirely defeated, as he was trying to bust out... But he never showed up again. (This was the result of Executive Meddling, canceling the show before they could go through with their plans to bring him back.)
  • The Family Guy Chicken Fights all end with the battered, mutilated, frequently shredded chicken opening one of its heavily blackened eyes. Even after it's been sucked through a jet engine, or pounded into submission with a saucepan, or...
  • Freddie as F.R.O.7 had a huge one at the end with Freddie's evil aunt escaping and him getting called over to Washington D.C. There was in fact, already a sequel in the works, but it got shelved when the movie didn't do well and the American release cut half the hook out.
  • Gravity Falls
    • "Gideon Rises": The Season Finale has Grunkle Stan revealed to be the owner of Journal 1, and he uses all three journals to activate a mysterious portal in the hidden basement of the Mystery Shack. The original airing punctuates this by having the character say that "Gravity Falls will return" over the end credits, though we don't discover the portal's purpose until "Not What He Seems."
    • "Scaryoke": The government agents Dipper called are revealed to have survived the zombie attack, which is enough confirmation for them to investigate Gravity Falls. The next several episodes have them in the background before they make their formal return in "Not What He Seems."
    • "Weirdmageddon": The Grand Finale has Dipper opening the note he got from Wendy, which has the entire town thanking the twins and hoping they'll return next summer. The Stinger shows Bill Cipher as a live-action statue in the middle of the woods, implying that he would someday return too...
    • Also from the finale, as Bill is dying, he shouts out a phrase in backwards speech: AXOLOTL / HEY XOLOTL, MY TIME HAS COME TO BURN, I INVOKE THE ANCIENT POWER THAT I MAY RETURN. Interestingly enough, while this is a clear reference to Alex Hirsch frequently responding with a picture of an Axolotl when asked spoilery questions, Xolotl is the name of the Aztec god of death... and twins.
  • In Jackie Chan Adventures, after Jade destroys Shendu with one of his own Talismans, Uncle reveals that when an evil is destroyed, a new evil can fill the void, possibly being even more dangerous. The next season deals with Shendu's siblings forcing his spirit (which survived his body's destruction, likely due to the Sheep Talisman or demons naturally become spirits once they die), to take advantage of this void (via an ancient artifact), by using it to release them from their otherworldy prison so they can reconquer the world.
  • Justice League set up its second season as possibly the last, so they ended it in a truly epic finale with the watchtower base being destroyed. At the end and after Hawkgirl resigns from the League, Superman asks what they are going to do now, which Batman replies with "We rebuild." This leads into Justice League Unlimited, but was enough to be considered And the Adventure Continues.
  • My Little Pony: Friendship Is Magic:
    • The story normally takes place in such a way that any episode can happen any day, but Season 3's premiere ended like this, with Princess Celestia nodding at Princess Luna, who magically summons a book with stars and swirls on the cover.
    • The season 3 finale (which incidentally pays off said Star Swirl sequel hook) definitely is trying to draw you in for season 4. Twilight turns into an alicorn and is now a princess of Equestria. According to the writer's twitter, she considers this episode the first in a 3-parter. The 2-part season 4 premiere serves as the final two parts.
    • Considering season 5 was announced, plenty in "Twilight's Kingdom, Part 2". Such as the whereabouts of Scorpan in all of this, what new powers the rainbow elements entail and how Ponyville will now function as a kingdom, not to mention how Discord's completed reform will be displayed.
    • The villain of the Season 5 premiere, Starlight Glimmer, escapes at the end of her story and is seen a couple of times in the background throughout the season.
  • Randy Cunningham: 9th Grade Ninja: The end of "Randy Cunningham: 13th Century Ninja" suggests Catfish Booray will become a regular antagonist in later episodes.
  • Star Wars Rebels: The series finale, "Family Reunion — and Farewell", ends with the protagonist, Ezra Bridger, having been lost in hyperspace with antagonist Grand Admiral Thrawn while liberating Ezra's home planet from the Empire. A Time Skip (covering the period of time of Rogue One, A New Hope, The Empire Strikes Back, and Return of the Jedi) ends with Sabine narrating that she and Ahsoka Tano are setting out on a quest to find Ezra.
  • Taz-Mania: In one episode, Molly brings a kitty home and the kitty torments Taz behind Molly's back. In the end, the kitty held a sign saying "I'll be back". A later episode did feature the cat returning.
  • At the end of Teen Titans season four, Big Bad Trigon has been defeated and the apocalypse averted, but Robin makes a point of reminding Raven that Slade, who'd been acting as The Dragon, is still alive and on the loose. This is never really followed up on, however as Slade only gets a cameo in the next and final season (though Word of God is that he was supposed to successfully become The Starscream to the new Big Bad, but it was scrapped for time constraints).
  • Every season of Total Drama ends this way, with the exception of World Tour, Revenge of the Island, and Pahkitew Island.
  • In the U.S. Acres episode "Orson Goes on Vacation", Orson says he'll be on vacation for a week soon, and he asks Wade to be in charge again, but he refuses, a possible nod to "Temp Trouble", even though he was actually gone for two weeks in that episode, possibly because in a scene we weren't shown, he called them in the middle of his vacation to tell that he was going to have an extra week off. The person "in charge" in that episode is Aloysius Pig.
    • It's not possible both episodes exist at the same time or connected since there was too many different scenes and mixing an old episode to a newer one doesn't fit Roy and Wade's Character Development of their friendship.
      • Or maybe it took place in the future. This isn't the only time it's happened-the episode where they imagine it's summer during the winter took place a year after the episode had aired, because Wade says his family did something brave every 10 years, and the next time he would do this was in 2004. Said episode aired in 1993.
    • Speaking of Aloysius Pig, in "Kiddie Korner", we have this little gem:
      Orson Pig (singing): We'll bring to you, when we're back next time...
      Aloysius Pig (spoken, as he's being hit with pies): HELP! HEEELP!
      Orson Pig (singing): Something more wholesome than a nursery rhyme! note 
  • Wander over Yonder
    • The Stinger during the end credits of "The Rider" replays the final shot of the episode before pulling out to show Lord Dominator laughing maniacally, who would go on to be the main threat of the next season.
    • The Stinger during the end credits of "The End of the Galaxy" has a decrepit space capsule from the planet Earth sitting on a destroyed planetoid, brimming with green energy similar to that of Lord Hater's and accented with the sound of a monkey screeching and evil laughter.

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