A great plot for a 'Spider - Man House of M' fanfiction could be that the House of M's reality - warping affects Spider - Man's powers in unexpected ways. His spider - sense could be enhanced to the point where he can predict not just immediate danger, but also long - term threats to the false world. He might then decide to use this power to find a way to reverse the House of M situation, all while facing off against those who want to maintain the false reality, including some powerful mutants.
One idea could be that Spider - Man discovers a hidden power within the House of M world that allows him to break the false reality. He could start seeing glitches in the altered world order and use his wits and newfound power to set things right. Maybe he teams up with some other characters who also sense that something is wrong.
One idea could be exploring the different Spider - People's home universes in more detail. For example, showing what Miles Morales' daily life in his universe was like before becoming Spider - Man. Another could be a team - up between Miles and an older, more experienced Spider - Person from a different universe to face a new and powerful villain.
Perhaps there's a fanfiction where Spider Man and Spider Gwen accidentally swap powers. They have to learn how to use each other's abilities to fight crime. This would lead to some really funny and also challenging situations as they get used to different ways of web - slinging and sensing danger.
One plot idea could be that Spider Man and Spider Woman team up to fight a new supervillain who has the power to manipulate time. They have to figure out how to work together while also dealing with the chaos the villain is causing in different timelines. Another could be a story where they get trapped in an alternate dimension and have to find a way back home while facing strange new enemies. Maybe there's a plot where they start to have feelings for each other but are afraid it will interfere with their superhero duties.
Maybe in the fanfiction, Spider - Gwen gets lost in the future where Spider - Man 2099 exists. He has to help her get back to her own time while also protecting his own version of New York from the chaos her presence might bring. They could learn from each other's fighting styles and develop a unique bond in the process.
Perhaps in a fanfiction, the Raft is under a siege by an unknown force. Spider - Man, despite being a prisoner, decides to help defend it. He teams up with some of the more morally ambiguous inmates. Together, they have to overcome their differences and fight off the attackers while also dealing with the internal power struggles and security issues within the Raft.
One idea could be exploring the relationship between Spider - Man 2099 and other superheroes in the future. Maybe he teams up with a new group of heroes to fight a powerful villain who threatens the entire city.
One plot idea could be Spider Man having to face a powerful new villain all by himself in a post - apocalyptic New York. The city is in ruins, and he has no backup from the Avengers or other heroes. He has to rely on his wits and his web - slinging skills more than ever.
Well, a cool plot could be that there's a scientific experiment gone wrong that fuses Venom and Spider - Man's powers in an unexpected way. They have to figure out how to control these new combined abilities while also dealing with villains who want to steal their power source. Or perhaps Venom gets amnesia and Spider - Man has to convince him that they were once enemies but now need to work together. There could also be a story where Venom's offspring has a different relationship with Spider - Man, like it's more of an anti - hero sidekick.
One idea could be Spider Man having to team up with his greatest villains to fight a common enemy from another dimension. This would force him to put aside his differences and find a way to work with the likes of Green Goblin and Doctor Octopus.
One idea could be that Spider - Man discovers a new villain who has a personal vendetta against him for something he unknowingly did in the past. This villain targets the people Spider - Man cares about, like Aunt May or Mary Jane, forcing him to go on a full - throttle revenge mission to protect them and clear his name.