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- Dragon Ball: Doctor Gero created several androids to kill Goku. Unfortunately for him, either they were too weak to kill him or they performed a Heel–Face Turn. However, the apparation of Cell, Gero's supreme creation, who wasn't involved in the plan to kill Goku at all, managed to complete Gero's objective by self-exploding, killing Goku in the process.
- In the last episode of Panty & Stocking with Garterbelt, after Panty and Stocking beat the Big Bad, Garterbelt comments that things went "approximately as planned", reflecting on the fact that he temporarily died during the battle and that the Big Bad managed to go One-Winged Angel. This follows up on two "just as planned" comments and one "not as planned" comment earlier in the episode.
- In Death Note, Light OutGambits Near by fooling him into stealing a fake Death Note. However, because of Mello's own unrelated failed Indy Ploy to kidnap Takada, Near realizes the note is fake and is alerted to the location of the real Death Note, which he also steals and replaces with his own fake, allowing him to outwit Light.
- Just before he dies, Uchiha Itachi plants a mysterious crow inside of Naruto with the message, "I hope you never have to use it." Jump to the 4th Ninja War where Itachi has been revived as a zombie under the enemy's control. He and Naruto fight, that crow appears, and suddenly Itachi is on the good guys' side. Itachi explains that the crow contained a pre-prepared genjutsu that would hypnotized whoever saw it to protect Konoha, programmed to only to respond to the presence of Itachi's eyes. The plan was that if Sasuke decided to turn on the Leaf and use Itachi's eyes to power himself up, the genjutsu would turn him good. However, now in control of himself, Itachi can work to undo the resurrections and talk some sense into Sasuke personally.
- Played straight over the course of the Star Wars saga. Qui-Gon's original plan was for Anakin to bring balance to The Force. However, he ends up falling to the Dark Side and it seems that he won't. In Return of the Jedi, however, he does bring balance to the Force by ensuring that the last of the evil aspect of the Dark Side of the Force dies with him.
- In Predator, Dutch's plan to lure the titular menace into a deadly knife-trap fails when the Predator spots what he's up to and simply goes around it. Just as its about to kill him, Dutch notices its standing right under the trap's triggering mechanism... a giant log.
- Harry Potter has a rare example for the villain. Voldemort is unaware that Harry is his final (de facto) Horcrux. As a result, he gave himself a way to win even after the other sources of his power were destroyed. He ruins it, though, by using the Killing Curse on Harry again.
"We plan, we get there, all hell breaks loose."
- The heroes had one in place as well. Dumbledore originally planned to depower the Elder Wand by having Snape kill him by consent. This was ruined when Draco Malfoy Disarmed him during their encounter, and Dumbledore never got a chance to reclaim it. Later, Harry Disarmed Draco of his usual hawthorn wand, taking it for his own—and by doing this, Harry (by pure luck) became the master of the Elder Wand, essentially preventing Voldemort from ever becoming its master. This is eventually what allows Harry to win against Voldemort.
- It happens all the time in the series. Harry even lampshades this.
- In The Lord of the Rings, Gandalf and Aragorn's Batman Gambit pays off in getting the One Ring to Mount Doom, but the One Ring itself spans their plans by finally corrupting Frodo at the last crucial moment. Fortunately, Gollum shows up to take the ring for himself before accidentally falling into the volcano and destroying it.
- Foundation: In Foundation and Empire, Devers constructs an elaborate plan to defeat Bel Riose and The Empire, only for it to do nothing and political infighting on Trantor win the war for them. This is taken as a sign of the inevitability of the Seldon Plan's success.
- When the heroes of Relativity encounter a powerful telepath named August Moon, they find it nearly impossible to fight him because he can read their minds and know what their attacks will be before they make them. At one point, however, Ravenswood sadly recalls how he and August used to be friends before he became a villain. The memory distracts August long enough for him to be defeated.
- One of Asimov's short stories had the administrator of an Underwater City believing that two visitors, husband and wife, are observers from a council with significant authority over Earth, especially colonization programs, and that they will make a report that (he believes unfairly) will help contribute to ocean colonization resources being redirected to bolster space colonization, so he plans a suicidal 'accident' to desperately derail it. This leads to the woman bluffing that she is a member of the council, and that not only wouldn't the plan work to its intended goal, but the ocean colonization program is pivotal to part of the space colonization program, and therefore won't be shut down, so it's pointless too. When the administrator stands down and entire thing is over, and the two visitors are on their way back home, it is revealed that the husband is a member of the council, and while they might not have been thinking in that direction before, his wife made a very good argument for why the ocean colonization program should continue...
Live Action TV
- In Noob: Le Conseil des Trois Factions, Gaea's The Scrooge attitude in Noob turns out to have had ulterior motives. Besides a bunch of money, the plan needed one of the game's larger guilds as a target. When she excecutes it on Roxxor, the biggest guild of the Coalition, she admits that her initial target was Justice from the Empire, her former faction. What happened between the two? Mid-way through Noob, a Frame-Up made her hated in the Empire and she got a literal fan club whose members were convinced that she was a Double Agent faithful to the Coalition. She spent some time basically giving the Sure, Let's Go with That treatment to the fan club while staying in the Empire, but a moment of disappointment with her Empire guild made her change factions, which was made easier by her fan club welcoming her with open arms. With the new faction came a new large guild to target.
- Scooby-Doo loves this trope. Fred's plan to capture the Monster of the Week usually backfires because of Scooby and Shaggy's stupidity but somehow, in a way usually unrelated to Fred's plan, the monster is still caught at the end.
- At the end of the two-part My Little Pony: Friendship Is Magic episode "Princess Twilight Sparkle", it is revealed that before he was turned to stone over a thousand years ago, Discord planted magic seeds meant to steal magic from the Tree of Harmony, capture Princess Celestia and Princess Luna, and spread across Equestria. However, the tree's magic prevented the seeds from flourishing. After over a thousand years, the tree weakens just enough for the plants to resume Discord's original intent. By this time, though, Discord had undergone a Heel–Face Turn, though it still amused him to sit back and see how it played out as an impromptu test for Twilight.
- In Young Justice it seems like the Aqualad double agent plan is doomed to failure as thanks to Miss Martian Frying his brain to "avenge" Artemis who wasn't really dead and having to bring her onto Manta's sub to fix this, there's no way to get her off safely (Manta's gonna kill her once she's done) without tipping Manta off and scrubbing the mission. Cue Sportsmaster and Chesire raiding Manta's sub also trying to avenge Artemis and inadvertantly breaking her out, allowing her to escape and cover her tracks.
- The Old Spice commercials fit this trope pretty well. It was supposed to advertise a body wash, but no-one seemed to buy that particular product. However, the Old Spice brand as a whole has become far more popular.
- Go Fish. A house rule (so common that most people don't know it's not a base rule) is that if you ask for the wrong card and your normally turn-ending penalty draw either completes a pair or it's what you asked for, it doesn't end your turn.