Often, the kidnapped character may not be as helpless as they seem. They could be a spy or an assassin in disguise, which completely changes the dynamic of the kidnapping situation in the fanfiction.
A common plot twist is that the kidnapped person turns out to have a hidden power or knowledge that Zuko needs. For example, they might know a secret about his family or a powerful bending technique.
One common plot twist could be Zuko, as a girl, having to navigate the same political challenges but with new gender - based obstacles. For example, she might face different expectations in the Fire Nation's patriarchal society. Another could be a romantic sub - plot where characters who previously interacted with male Zuko now have different dynamics with her as a female. Also, Zuko might use her new form to her advantage in disguise, perhaps infiltrating an all - female group to gain information for her cause.
Well, one possible plot twist could be that Kohana has a hidden motive that's not as evil as it seems at first. Maybe she's being controlled by a greater force and Naruto realizes this and tries to save her instead of just escaping. Another could be that Kohana is actually from a long - lost clan that has a prophecy related to Naruto, and the 'kidnapping' is a way to start fulfilling that prophecy.
A really interesting plot twist could be that Zuko is actually there to spy on Aang at first. But as he spends time with Aang as his roommate, he starts to have second thoughts. He realizes that Aang is not the enemy he was made out to be and he has to decide whether to continue with his spying mission or become a true friend to Aang.
One possible plot twist could be that Sakura has been secretly training a new jutsu and uses it to outwit Orochimaru at the last moment. For example, she might have developed a genjutsu that can counter Orochimaru's mind - control techniques. Another twist could be that Naruto and Sasuke arrive just in time, but instead of a straightforward rescue, they find that Sakura has made a deal with Orochimaru in order to gain some powerful knowledge. This could lead to a rift between her and her teammates.
One possible plot twist could be that the 'Uzumaki' who kidnaps Naruto is actually an impostor. Maybe it's someone with shape - shifting abilities who wants to use Naruto for some dark purpose. For example, they could be trying to extract the Nine - Tails' chakra from Naruto in a more brutal way than the Akatsuki ever planned.
Perhaps Kai kidnaps Elena to force her to help him with something. He might need her doppelganger blood to break a curse on himself or his family. In the process, Elena discovers a side of Kai that she didn't expect, and they form an unlikely alliance against a common enemy that emerges during the ordeal.
One interesting Zuko - kidnapping fanfiction could be 'The Unplanned Abduction' where Zuko kidnaps a character under a misunderstanding. It then delves into how they resolve the situation and grow to understand each other better.
Perhaps the real reason behind the kidnapping has to do with a secret Pokemon that Whitney has. It could be a legendary Pokemon that she's protecting, and the kidnappers want to use it for their own evil purposes. And then, when the rescuers think they've found Whitney, it turns out to be a decoy set up by the kidnappers.
One possible plot twist could be that the kidnapper is actually someone close to Jacksepticeye, like a friend or a crew member with a hidden agenda. Another could be that Jacksepticeye has a secret ability or knowledge that he uses to turn the tables on the kidnapper.
One interesting plot twist could be that the kidnappers turn out to be working for an old enemy of Zuko's family. They initially thought it was just a random act of villainy, but as the story unfolds, they discover a deeper conspiracy aimed at destabilizing the Fire Nation. Another twist might be that Katara discovers she has a hidden power that she can use to help them escape, but using it comes with a great cost. Maybe it drains her life force or has some other negative consequence.