Perhaps Wade is being controlled by some outside force. This force makes him kidnap Peter against his will. Peter tries to break Wade out of this control while also dealing with the situation of being held captive. It could lead to a lot of action and emotional moments between them as they try to figure out what's going on.
One possibility is that Wade has some sort of misunderstanding. Maybe he thinks Peter is in danger from some other villains and kidnaps him to keep him safe. He might take Peter to a secret hideout where Peter initially struggles but then realizes Wade's intentions are not entirely malicious.
A powerful and corrupt organization might be the main antagonist. They blackmail Wade into kidnapping Peter. The organization wants to study Peter or use him as a bargaining chip. Wade is caught in a difficult situation where he has to protect Peter from this organization while also dealing with the fact that he has kidnapped him.
A simple plot could be Wade and Peter going on a solo adventure outside of the main Avengers activities. They stumble upon a hidden lair of a small - time villain who is planning something big. They use their combined skills to infiltrate the lair, with Peter using his web - slinging and agility and Wade using his weapons and combat skills. In the end, they stop the villain's plan and return to the Avengers as heroes.
One possible plot could be that Dark Tony has some sort of vendetta against Peter. Maybe he believes Peter has something that belongs to him, like a piece of technology or some secret information. So, he kidnaps Peter to get it back. He might hold Peter in a secret lair and try to force the information out of him. This could lead to a series of events where Peter tries to escape and outwit Dark Tony.
It could also be for revenge. Perhaps Stiles or someone associated with him has wronged Peter in the past within the context of the fanfiction story. So, Peter kidnaps Stiles to get back at him or those related to him. Another reason might be that Peter is being controlled by some other force. There could be a dark entity manipulating Peter's actions, and it makes him kidnap Stiles for its own sinister purposes.
Well, Matt might use his skills as a lawyer to help Peter out of any legal troubles he's in, which would be a great form of comfort. He could be like 'Peter, don't worry, I've got this all sorted legally for you'. Wade could share his own experiences of dealing with difficult situations, like his battles with his own inner demons and how he overcame them. This could make Peter feel less alone in his struggles. And they could team up to protect Peter from any threats, giving him a sense of safety and comfort.
Wade protects Peter by always being there to watch his back in dangerous situations.
Well, it could also lead to a rescue mission. The Avengers or other superheroes might find out about Peter's kidnapping. They would then come together to form a plan to rescue him. This could involve a lot of strategizing and fighting against Thanos' forces.
Well, it's a tough call. On one hand, Peter Parker has the physical advantages with his super - agility. However, Wade Wilson is unpredictable. He might not have the natural grace of Peter, but his ability to adapt to crazy situations could make him surprisingly good at yoga. But overall, Peter's more in - tune with his body due to his spider - sense, so he'd likely have the edge.
One possibility is that Artemis has been misinformed. Some enemy of Percy has tricked her into thinking that Percy is a danger to the demigods. So she kidnaps him to stop him from causing harm. But as she keeps Percy captive, she slowly realizes that she has been deceived when Percy starts to explain his side of the story and the real threats he has been fighting against.
The plot could involve the Phantom seeing Christine as his only salvation from his lonely and tortured existence. So, he kidnaps her with the intention of making her understand his world. He may show her his musical creations, hoping she'll come to love him in return. However, Christine might be initially terrified and try to escape.