A plotline could be that Hermione is kidnapped by a group of anti - Muggleborn fanatics. They want to make an example out of her to send a message to the wizarding world. Hermione then has to use her wits and the spells she knows to outsmart them. She might start by trying to find out their motives and weaknesses while pretending to be compliant. Along the way, she could also try to convert some of them to see the wrong in their ways. Another possibility is that a time - traveling villain kidnaps Hermione to stop her from achieving great things in the future, and she has to figure out how to get back to her own time and prevent the villain from changing history.
One possible plotline could be that a dark wizard kidnaps Hermione to force Harry and Ron to give up a powerful magical artifact. Another could be that a group of rogue wizards take her to use her vast knowledge of magic for their own evil purposes. Maybe a jealous rival from Hogwarts, who feels overshadowed by Hermione's intelligence, arranges the kidnapping to get her out of the way.
One possible plotline could be that Draco kidnaps Hermione due to some dark family obligation related to her birth. Maybe there's a prophecy that involves her and his family wants to control the situation. Another could be that he's misinformed about her birth and thinks she's a threat to the wizarding world as he knew it. So, he takes her to figure out the truth.
One possible plotline could be that the unsub kidnaps JJ because she has been getting too close to uncovering his identity in a series of murders. The team then has to race against time to find her. They might start by retracing her last steps and interviewing people she was in contact with recently.
Another plot could involve a deranged fan who becomes obsessed with Spencer and decides to kidnap him but ends up taking another fan by mistake. This could lead to a situation where Spencer has to use his profiling skills to figure out who the kidnapper is and where they are holding the fan, all while dealing with his own guilt for the fan being in danger.
One possible plotline could be that Harry says something unkind to Hermione during a heated argument about a school project. This makes Hermione feel betrayed and sad. But later, Harry realizes his mistake and tries to make it up to her.
One possible plotline could be that Keith is kidnapped by an enemy force. His friends then embark on a dangerous rescue mission, facing various challenges along the way. Maybe they have to infiltrate a heavily guarded enemy base to find and free him.
One possible plotline could be that Naruko is kidnapped by a powerful enemy who wants to use her as a bargaining chip against her friends or family. Another could be that she is kidnapped by a mysterious organization for some sort of experiment. Maybe she's kidnapped by someone who has a personal vendetta against her and plans to make her suffer.
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 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.
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.