Well, perhaps Sadik kidnaps Sarah Jag because he believes she has some valuable information. He could be from a rival group or just a desperate individual. In the fanfiction, Sarah Jag could initially be terrified but then gradually start to understand Sadik's reasons and try to bargain with him for her freedom. This could lead to a series of tense exchanges between them.
One possible plot could be that Sadik has some hidden motives for kidnapping Sarah Jag. Maybe he is seeking revenge on someone related to her. He might hold her in a secret location and Sarah Jag has to use her wits to try and escape or find a way to communicate with the outside world.
Sadik could be a villain in this fanfiction. He might be a character with a troubled past or some dark secrets that drive him to kidnap Sarah Jag. Sarah Jag is likely the victim in this scenario, perhaps an innocent person caught up in Sadik's plans.
One interesting plot could be that Sarah, after being kidnapped, discovers a hidden side of Jareth's kingdom that he has kept secret from everyone. She finds out that there are other captives there who are being held against their will for reasons she has to uncover. As she tries to escape and free the others, she starts to see Jareth in a different light, not just as a captor but as a complex being with his own motives and past traumas.
Well, perhaps Kevin kidnaps Gwen because he wants to use her as a bargaining chip against Ben. He might think that by having Gwen in his control, he can force Ben to give up the Omnitrix or something valuable. Another possibility is that Kevin has some sort of grudge against Gwen specifically, maybe related to her magical powers that he either fears or envies.
One possible plot could be that Sasuke has some misunderstanding. He might think Naruko is in danger from some hidden enemy in the village. So, he kidnaps her to protect her, but Naruko doesn't understand his intentions at first and struggles against him. Eventually, they start to communicate and Sasuke explains his reasons.
Well, in this kind of fanfiction, perhaps Bowser kidnaps Peach because he wants to make her his queen. Peach, being the strong - willed character she is, tries to escape on her own while Mario is on his way. Bowser sets up all sorts of traps to keep Mario from reaching Peach. The fanfiction could also explore the relationship between Bowser and his minions during this time, like how they take care of Peach while she's captive.
Perhaps in the fanfiction, Madara kidnaps Sakura because he realizes her potential as a medic - nin. He wants her to heal his old wounds or maybe study her unique healing abilities to find a way to make himself invincible. He could keep her in a hidden lair and force her to perform medical experiments on him.
One possible plot could be that Luka has been mind - controlled by an akuma. In the Miraculous Ladybug universe, akumas often make people do things they wouldn't normally do. So, he kidnaps Marinette not out of his own will but because of the akuma's influence. Marinette might initially be shocked and scared, but then she could try to find a way to break the akuma's hold on Luka and save them both.
The plot might go like this. Slade kidnaps Robin in a very stealthy way. He takes Robin to an abandoned building. There, he tries to indoctrinate Robin into his way of thinking. He could be telling Robin that Batman is using him and that he can offer Robin more power. However, Robin stays true to his beliefs. Meanwhile, Batman is on a frantic search for Robin, following every lead, and the Bat - family is also on high alert. Robin is constantly looking for an opportunity to turn the tables on Slade and escape.
It could be that Lucius is under the orders of Voldemort. Voldemort wants Harry alive but in his control, so he sends Lucius to kidnap Harry. Lucius might then keep Harry in some secret location, perhaps an old Malfoy manor cellar, guarded by dark magic spells. Harry would then have to find a way to escape, maybe by using his own unique magic abilities or with the help of his friends who eventually figure out where he is.
Maybe Lucifer kidnaps the angels because he believes they hold a secret that can help him regain his former glory. He subjects them to various forms of interrogation and tests in his lair. The angels, on the other hand, are trying to keep the secret safe while also looking for a way to escape. Meanwhile, the other celestial beings are searching for the kidnapped angels and preparing for a possible battle with Lucifer if he doesn't release them.