Perhaps the kidnapping was a ruse by April herself to test the turtles' loyalty or to draw out a hidden enemy. This would completely change the dynamic of the expected rescue mission.
A common plot twist could be that April was actually kidnapped by someone she thought was a friend. This person could be under the control of a greater evil. It would add an element of betrayal to the story.
A typical theme in these fanfictions is the growth of the characters. For instance, while rescuing April, Michelangelo might become more brave and responsible. Additionally, the mystery surrounding April's kidnapping can be a major theme. Who kidnapped her and why? This mystery keeps the readers hooked as the turtles try to solve it during their rescue mission.
One possible scenario in a TMNT April - kidnapped fanfiction could be that the Foot Clan is behind the kidnapping. They might want to use April as bait to lure the turtles into a trap. The turtles would then have to outwit the Foot Clan's various henchmen and ninjas to reach April. April herself could also show some of her own fighting skills or use her wits to try and escape on her own while waiting for the turtles to arrive.
Well, in this type of fanfiction, the villains who kidnap April can vary. It could be the Foot Clan trying to use her as a bargaining chip against the turtles. Or maybe some new, evil mutant has emerged and sees April as a key to something. The story usually focuses on how the turtles will overcome the obstacles to get her back safely. There are often a lot of action - packed scenes as they battle their way to April.
A possible plot twist is that the kiss is part of a prophecy. In the TMNT universe, there could be an ancient prophecy that foretold of a kiss between Leo and April which would either save or doom the world. So after the kiss, they start to discover clues about what this really means for them and their friends. Or perhaps the kiss is seen by an unexpected observer who then spreads false rumors about it, which leads to all sorts of misunderstandings within their community.
One possible plot twist could be that Mikey was kidnapped by an unexpected enemy, like a former ally who turned bad. Maybe it was someone he trusted, and this betrayal adds a layer of drama.
Well, sometimes in princess kidnapped fanfiction, a plot twist is that the princess was kidnapped as part of a political scheme by her own family members. They might be trying to gain power or start a war. Also, the princess could find out that she has a long - lost twin during the kidnapping ordeal. And then there's the twist where the place she's being held is actually a portal to another world, and she has to figure out how to get back home from there.
A common plot twist is that the kidnapper turns out to be someone Sakura least expected, like an old acquaintance with a hidden vendetta. Another could be that Sakura discovers she has a hidden power during her captivity that she uses to either escape or help Sasuke find her.
One common plot twist could be that the kidnapper is someone they least expect, like a close acquaintance with a hidden agenda. Another might be that Bughead discovers a secret about their captors during the kidnapping that changes the whole situation.
One common plot twist could be that the kidnapped person discovers they have a special power or connection to the vampire world that the vampire didn't expect. For example, they might be able to resist the vampire's mind - control powers more than others. Another twist could be that the vampire who kidnapped them is actually being controlled by a more powerful and evil entity. So, instead of being the main villain, the kidnapping vampire becomes an ally later on. And sometimes, the kidnapped person turns out to be a long - lost relative of the vampire, which completely changes the dynamic between them.
A plot twist might be that Sokka's kidnapping was part of a bigger plan to draw out other important characters. For example, his friends come to rescue him and end up walking into a trap set by the kidnappers.