Well, in some versions of 'Stiles is kidnapped fanfiction', the kidnappers could be from an enemy faction within the supernatural community. Stiles might be used as a bargaining chip. His friends would then have to decide whether to give in to the kidnappers' demands or find a way to rescue him without compromising. It could also be that Stiles discovers a hidden power or ability while kidnapped, which he then uses to escape. For example, he could have a latent psychic ability that gets triggered by the stress of the situation.
One possible plotline could be that Stiles' friends immediately start a search. They might follow clues like strange footprints or a mysterious note left behind. Another could be that Stiles manages to outwit his kidnappers in some way while being held captive, perhaps by tricking them into revealing their weaknesses. Maybe the kidnappers are after something Stiles knows, like a secret about the supernatural world in the fanfiction's setting.
Perhaps in this 'imprijt kidnapped fanfiction', the kidnapped person is a key figure in a grander scheme. Imprijt kidnaps them to use as a bargaining chip against their friends or allies. The friends then embark on a rescue mission filled with various challenges and unexpected twists.
One possible plotline could be that Yami is kidnapped by a rival group who wants to use his special powers for their own evil deeds. His friends then embark on a dangerous mission to rescue him. Another could be that Yami is kidnapped as part of a ransom plot against someone he is close to, and they have to figure out how to meet the kidnappers' demands without sacrificing too much.
Well, it could start with Mycroft being lured into a trap and kidnapped. The kidnappers might be from a different dimension or have some sort of supernatural power. As the fanfiction progresses, Mycroft could use his wits to outsmart the kidnappers even while in captivity. There could be a lot of mind games and tense moments as he tries to escape or signal for help.
One possible plotline could be that Twilight Sparkle is kidnapped by a powerful dark magic user who wants to steal her knowledge of magic. Her friends then embark on a quest to rescue her, facing various challenges along the way. Another could be that she is kidnapped by an unknown force from another dimension for some sort of experiment. Her friends have to figure out how to cross dimensions to save her. A third plotline might be that a group of villains kidnap Twilight Sparkle to use her as a bargaining chip against Equestria, and her friends must find a way to outwit the villains and get her back safely.
In some PLL Emily kidnapped fanfiction, the story could be centered around a misunderstanding. Let's say there's a new group in town that mistakes Emily for someone else who they think has wronged them. So they kidnap her. As she's held captive, Emily tries to convince them of their mistake. Meanwhile, her friends are worried sick and are trying to find her. They search through her recent activities, her contacts, and any strange happenings in town. They might also get some help from Caleb or Toby, who have their own skills in finding people. Emily, on her part, might find a way to communicate with the outside world, like using a hidden phone or leaving signs in the room where she's being held.
One possible plotline could be that Alex and Mason kidnap someone for a noble cause, like to expose a corrupt organization. They might keep the victim in a hidden location while they gather evidence against the bad guys.
In a fanfiction scenario, the kidnapping could be a ruse by an old enemy who wants to break the team apart. They might brainwash the kidnapped member to turn against the others. The team would then not only have to rescue their friend physically but also find a way to break the brainwashing. This would involve a lot of emotional turmoil within the team as they deal with the betrayal, while also trying to stay focused on saving their friend.
Well, in this type of fanfiction, perhaps the victim discovers that Jeff has a weakness during the kidnapping. It could be something psychological. And then they use that knowledge to try and escape. Or, it could be that Jeff has some sort of ulterior motive for the kidnapping other than just causing harm, like he needs the victim for some dark ritual.
One possible plotline could be that Magnus Bane kidnaps someone in order to protect them from a greater danger. Maybe there's a powerful dark magic user after a young warlock, and Magnus takes the warlock to a hidden location. Another could be that Magnus is misjudged, and he actually didn't kidnap but was trying to rescue someone who was in a magically - induced coma and had to move them quickly. A third plotline might be that Magnus kidnaps someone as part of a deal with a demon, but then has a change of heart and tries to find a way out of the deal while keeping the kidnapped person safe.
One possible plotline could be that Natasha is kidnapped by a rival organization seeking to extract information from her about S.H.I.E.L.D. secrets. They might try various forms of interrogation, but Natasha, being the tough spy she is, manages to hold out and start planning her escape. Another could be that she's kidnapped by someone with a personal vendetta against her past as a Black Widow, perhaps a family member of someone she killed during her assassin days. They want to make her pay for her past actions.