One plot idea could be that Naruto is framed as an S - rank criminal. Maybe someone planted false evidence against him, and he has to go on the run while trying to clear his name. He might have to team up with unlikely allies, like some of the Akatsuki members who also believe he's been wrongly accused.
Well, a plot might involve an S - rank missing - nin who was framed. They are hunted by all the villages but are actually innocent. As they try to clear their name, they uncover a conspiracy within the ninja world. Another interesting plot could be an S - rank missing - nin who has a unique ability that no one else has. This ability makes them a target, but also gives them the power to change things. For example, they might be able to control a powerful natural force like a storm or an earthquake. And then there's the idea of an S - rank missing - nin who is on a quest for revenge against a particular village or person, but as they pursue their revenge, they start to question whether it's really worth it.
Well, one idea could be exploring how a criminal family within the Naruto universe might have unique jutsu or abilities that are used for illegal activities. For example, they could have a jutsu that allows them to steal chakra undetected.
One idea could be a crossover where Naruto characters are wrongly accused of crimes in the RWBY universe. For example, Naruto could be framed for stealing Dust in Vale. The story could then focus on him proving his innocence while also learning about the unique aspects of the RWBY world.
One idea could be a gamer who is wrongly accused of a cyber - crime within the game world and has to prove their innocence while facing off against powerful in - game enemies and real - world skeptics.
Well, you could write a fanfiction where the BAU team gets trapped in a virtual reality world created by a tech - savvy unsub. They have to solve puzzles and cases within this virtual world in order to escape. Or perhaps a story where a new agent joins the team who has a psychic ability that they keep hidden at first. But as the cases progress, this ability starts to surface and help the team in unexpected ways.
A plot could be that the female swordsman was experimented on by Orochimaru and turned into a criminal as a result of the dark chakra infused in her. She uses her sword to hunt down those who once supported Orochimaru's experiments. Her criminal actions are more about seeking justice in her own distorted way.
Another plot could be that a crime wave hits Paris, and all the evidence points to Chat Noir as the perpetrator. Ladybug is torn between believing in her partner and the mounting evidence against him. She has to dig deeper into the case to find the real criminal who is framing Chat Noir and clear his name.
One idea could be that Edward is a criminal on the run and Bella, a journalist, is trying to expose his crimes but ends up falling in love with him. Another could be Edward as a criminal mastermind who recruits Bella into his world of crime. Maybe Edward is wrongly accused of a crime and Bella helps him prove his innocence while they face many dangerous situations together.
One idea could be that the BAU team has to deal with a serial killer who is using ancient psychological torture methods. They have to quickly understand the killer's motives which are deeply rooted in some long - forgotten cultural practices.
One idea could be a vampire using their powers to manipulate crime scenes in ways that baffle the Criminal Minds team. For example, they could use their super speed to move evidence or their mind - control abilities on witnesses. Another plot could involve a vampire who is a serial killer, preying on victims in a pattern that the team has to figure out. Maybe the vampire has a moral code that only certain types of people are their targets, and the team has to understand this code to catch them.