One idea could be that Female Carnage targets Spider Man's loved ones to draw him out. Spider Man then has to use his wits and powers to protect them without getting caught in Carnage's violent traps.
Perhaps in the fanfiction, Female Carnage and Spider Man form an unlikely alliance. They might team up against a greater threat in the city, like a powerful new villain who has a plan to destroy the entire city. During their alliance, Spider Man tries to understand the complex nature of Female Carnage and her motives.
Well, perhaps in the fanfiction, Spider - Man bonds with Carnage to save an innocent person. Let's say Carnage has taken a hostage, and Spider - Man discovers that he can form a temporary bond to influence Carnage's actions. He then uses this bond not only to save the hostage but also to try and reform Carnage in some way. It could also be that the bond is a result of a magical spell gone wrong in the Marvel universe that links their fates together.
One idea could be Carnage taking over a major corporation in the Spectacular Spider - Man universe. Spider - Man then has to figure out how to stop Carnage without causing too much destruction to the company and its employees. Another plot could involve Carnage teaming up with a lesser villain to create chaos, and Spider - Man has to face two foes at once.
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.
Maybe a fanfiction where a forbidden jutsu backfires and causes widespread carnage in Konoha. Naruto and his friends then have to deal with the aftermath, not just physically rebuilding but also handling the psychological trauma of the villagers. They might discover some long - hidden secrets about the jutsu in the process.
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.
A cool plot could involve a young Peter Parker from a universe where he got his powers much later in life. He ends up in the main Spider - Verse and has to learn quickly from Miles and the other Spider - People. They could all work together to stop a symbiote - like entity that is infecting different versions of Spider - Heroes. It would be interesting to see how this inexperienced Peter copes with the situation and how his different perspective might help solve the problem.
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.