Wham Episode / Once Upon a Time

WARNING: Due to the nature of Wham Episodes being spoilerific in nature, all spoilers are Unmarked.

---

Season 1

• "The Heart is a Lonely Hunter". Regina remembers everything and has access to at least some of her magic, which she uses to kill Graham.
• "Skin Deep". Mr. Gold remembers everything too and now Regina knows it.
• "The Stable Boy". The source of Regina's grudge against Snow White: After Regina saved Snow's life, Snow naively disclosed Regina's relationship with the eponymous stable boy, resulting in said stable boy's murder and Regina's forced marriage to Snow's father. What's more, Kathryn is alive!
• "A Land Without Magic". the townsfolk have their memories restored, Jefferson releases Belle and leads her back to Mr. Gold, and Mr. Gold sends magic into Storybrooke.

Season 2

• "Broken". The episode's flashbacks are not flashbacks at all - part of the Enchanted Forest survived The Curse, and Emma and Snow are currently trapped there.
• "We Are Both". Anyone who tries to leave Storybrooke will lose all memories of their Fairy Tale life, possibly forever, Regina has her magic back, and Cora is alive.
• "Queen of Hearts". Cora and Hook have appeared in the real world, ready to exact their revenge.
• "The Outsider". Rumple creates a potion that allows him to cross over the boundary. At the end of the episode, he crosses the line, much to his and Belle's pleasure (though she can't come with him). Belle is then shot in the back by Hook, stumbles forward over the line, and loses her memories of Rumple/the Enchanted Forest/being Belle. Hook is then run over by a man with Pennsylvania license plates, meaning the outside world has come to Storybrooke.
• "Manhattan". Neal is really Rumple's long-lost son Baelfire, making Rumple Henry's grandfather. It's prophesied that Henry will bring about Rumplestiltskin's downfall.
• "The Miller's Daughter". Snow goes over to the dark side in order to defeat Cora; Cora's relationship with Rumple is revealed and it revealed that they were lovers and Cora almost gave up power for love before she took out her heart.
• "Selfless, Brave and True". Tamara is only with Neal in order to research magic, and she is the Her that Owen/Greg has been in contact with. Also, she fatally wounds August, who is reverted back to his original form of Pinocchio.
• "Second Star to the Right". Bae was sent to Wendy Darling's house after leaving the fairy tale world, and ends up being dragged by Peter Pan's shadow to Neverland where he lands on HOOK's ship. Meanwhile, Tamara makes her move, and uses one of the magic beans to send Bae away again!
• "And Straight on 'Til Morning". Emma has magic power at least equal to Regina's. Henry is kidnapped by Greg and Tamara and taken to Neverland, and is followed by the Charmings, Gold, Hook, and Regina. The Lost Boys work for an evil Peter Pan, who wants Henry for some reason - and has wanted him for hundreds of years. And Bae has been taken to the Enchanted forest, barely alive, and found by Mulan, Aurora, and Philip.

Season 3

• "Think Lovely Thoughts". Peter Pan is Rumplestiltskin's father, who took his name from a doll he had given Rumple before Pan de-aged himself in order to stay in Neverland forever. Pan then successfully convinces Henry to give him his heart, gaining ultimate power and possibly killing Henry in the process.
• "Going Home". Gold sacrifices himself to take out Pan, Regina sends everyone but Emma and Henry back to the Enchanted Forest in order to escape the new curse, Storybooke itself no longer exists, and Emma and Henry themselves no longer remember anything about the town or its inhabitants. Then, after one year living under new memories given them by Regina, Hook shows up at their front door asking for their help...
• "Witch Hunt". The Wicked Witch of the West and Regina are half-sisters through Cora. Wicked wants revenge against Regina because Wicked was given up at birth and Regina got to be raised by Cora. Rumple is alive (and practically insane) and is being held captive by Wicked.
• "Quiet Minds". Neal's alive. So is Rumpelstiltskin, as revealed earlier. However, Rumple is revealed to have been revived at the cost of Neal's life, and his apparent insanity was due to a desperate attempt to save Neal by absorbing him. Once Neal realizes this, he asks Emma to separate the both of them so they can finally go after the Wicked Witch. She does, and he dies in her arms.
• "Snow Drifts": The magic from Zelena's brooch opens a time portal that sucks in Hook and Emma, sending them to the time right before Snow and Charming meet for the first time. Emma unwittingly stops this from happening, forcing her and Hook to create a new turn of events and make sure that her parents' relationship isn't completely undone.
• "There's No Place Like Home": Emma and Hook succeed in re-orchestrating Snow and Charming's relationship, and they eventually return to the present, with a companion that Emma decided to save from Regina's castle, later revealed to be Maid Marian. Another object was unknowingly brought along to Storybrooke as well, a golden urn whose contents materialize into a woman: Elsa.

Season 4

• "Heart of Gold". Marian never returned from the past. Zelena is still alive, and has been disguised as Marian all this time through the power of the six-leafed clover. Now she is working with Rumpelstiltskin, and is using her connection with Robin Hood as leverage to get Regina to cooperate.
• "Operation Mongoose": Holy Guacamole! After a season of seeking the author, fighting fate and what have you, suddenly the author begins to rewrite EVERYTHING! Turning heroes evil, villains good, throwing the entire history of the enchanted forest topsy turvy. However, at the end of the conflict, HENRY becomes the new author and breaks the enchanted quill, but the Apprentice dies, and in order to save the town from being consumed by the Darkness, Emma uses the dagger (now without Rumple's name, since the Apprentice took the Dark One out of him).....and becomes the new Dark One. In order to save her, Killian and Henry are told that they need to find the sorcerer, who is revealed to be not Yen Sid, but Merlin!

Season 5

• And the season 5 premier "Dark Swan" is just as much wham. Though Emma is about to fall into darkness, her family and friends appear and save her. Then King Arthur appears and leads the group to Camelot, declaring that they are destined to find Merlin for them. Cut to six weeks later, the group lands back in Storybrooke, with no memories (again) of what transpired during their trip. Then Emma appears, and declares that she is the Dark One, and there is no longer a saviour in Storybrooke.
• "Birth" starts with Arthur and Zelena controlling Merlin to hold Emma's family hostage in exchange for the dagger and the spark, but the confrontation ends in the heroes' favor, leaving them with everything they need to reunite Excalibur. When Emma finally begins to reunite the blades, however, Hook starts bleeding out from a mortal wound from the sword. Cue Emma taking Excalibur, tethering Hook to it, and turning into Dark Swan. Hook disappears, only to be reborn from the vault as a second Dark One. Emma's entire plan was to reverse this.
• "Swan Song" ends with Hook making a Heroic Sacrifice to stop The Darkness and the Dark One once and for all. Emma, torn by grief decides to journey to the Underworld to get him back. Also Gold is the Dark One again after tricking Emma.
• "Last Rites": Robin dies and Hook is revived. Zelena also pulls a permanent Heel–Face Turn after killing Hades.
• "Only You" and "An Untold Story": The next Big Bad is Mr. Hyde and he's brought some friends to Storybrooke. Also, the Evil Queen is back after been separated from Regina.

Season 6

• "Strange Case": Hyde dies after Jekyll is killed by Hook. This means that the best way to kill the Evil Queen is for Regina to die.
• "Wish You Were Here": Emma and Regina are stuck in the fantasy world that the Evil Queen's wish created after Regina sees that world's version of Robin; the fantasy version of Henry also has good reasons to want Regina dead. We also know the identity of the hooded figure destined to kill Emma; it's Gideon, Rumple and Belle's son who the Black Fairy kidnapped and turned into a villain.
• "Mother's Little Helper": Everything Gideon has done since coming to Storybrooke has been to realise the Black Fairy because she has his heart; he succeeds. The Black Fairy also turns out to have been the one who created the Dark Curse in the first place.

Season 7

• "The Garden of Forking Paths": Lady Tremaine wants to revive her daughter, Anastasia, after she was killed and Tremaine blames Cinderella for it.
• "Greenbacks": Ivy is awake from the curse that sent everyone to Hyperion Heights and she has an agenda of her own.
• "Wake Up Call": Ivy was the one who cast the Dark Curse that made Hyperion Heights and she is just as dangerous as her mother. Roni is awakened from the curse but can't break it because Drizella did something that made the normal way have major consequences.
• "Eloise Gardener": The witch Tremaine has been keeping locked up is Mother Gothel and she gets loose because Rogers found her; she is Eloise Gardener. Tremaine is arrested as a result, giving Ivy and Gothel free reign. It also turns out Alice/Tilly is Hook and Gothel's daughter.
• "One Little Tear": Tremaine (who is also Rapunzel) defies becoming a Big Bad Wannabe and instead succeeds in reviving Anastasia, at a terrible cost to Lucy.
• "The Eighth Witch": Lucy's in a coma and can't be wakened, both Tremaine and a depowered Ivy are imprisoned, and Gothel has Anastasia under her control and plans to use her to gather the Coven of Eight.