In these types of fanfictions, a frequent plot twist is that the kidnapper turns out to be a hero in disguise. He kidnapped the princess to protect her from a real and immediate danger that she was unaware of. Another interesting twist is that the princess discovers that she is not really a princess but a commoner switched at birth, and the real reason for her kidnapping is related to this secret. And, the kidnapping could lead to the discovery of a hidden treasure that many had been searching for, and the princess has the key to it, which she didn't know before.
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.
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.
Sometimes, the plot twist is that Stiles is actually in on the kidnapping in a way. Maybe he's trying to protect his friends from a greater danger by faking his own kidnapping. So all the while his friends are searching for him, he's actually on a secret mission of his own, which is revealed later in the story and makes for a really interesting read.
One common plot twist could be that the kidnapper turns out to be someone Clarke knows in a different context, like an old acquaintance with a hidden agenda.
One common plot twist could be that the kidnappers turn out to be working for an old enemy of Spider - Man who wants to use Peter to get to him. Another could be that the person behind the kidnapping is someone Peter thought he could trust, like a fellow student or a neighbor who has a hidden agenda. Maybe there's also a plot twist where Peter discovers he has a new power during the kidnapping situation that helps him escape.
A common plot twist could be that the kidnapper is actually someone the victim thought was a friend. For example, a fellow trainer who seems friendly but has a hidden agenda. Another twist could be that the kidnapped Pokémon or character has a special power that the kidnappers didn't expect, which helps in their escape or rescue. For instance, a Pokémon that can turn invisible at will.
One common plot twist could be that the kidnapper turns out to be someone she knows in disguise. Maybe it's an enemy from her past who has a hidden agenda. Another could be that she is kidnapped as part of a bigger scheme to get to someone else she cares about.
One common plot twist could be that the kidnapper is someone Allen thought was a friend all along. It adds a sense of betrayal and shock to the story.
In some fanfictions, a plot twist could be that Haruhi's kidnapping is part of a virtual reality game that she unknowingly entered. The 'kidnappers' are just players in the game who are trying to win by capturing her. Another common plot twist is that the kidnapper has a change of heart halfway through. They start to see Haruhi's good qualities and instead of harming her, they end up helping her. And sometimes, it could be that the kidnapping is a test set by a mysterious organization to see if Haruhi is worthy of some special task or knowledge.