Well, a cool plot might be that Lady Death has some sort of connection to one of Spider - Man's villains. She uses this connection to manipulate events in the city. Spider - Man then has to figure out the link between them to stop the chaos. Or perhaps Lady Death gets amnesia and Spider - Man has to help her remember who she is while also dealing with the chaos her presence is causing in the city.
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.
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.
In a fanfiction, Spider - Man could be swinging during a big festival in the city. There are so many people and lights that it's hard for him to focus. But then he notices some suspicious activity on one of the floats. He has to swing down carefully, without causing panic among the crowd, and figure out what's going on. It could be a new kind of threat that specifically takes advantage of the chaos of the festival.
One plot idea could be that the Lizard is actually being controlled by an evil scientist who wants to use him to take over the city. Spider - Man has to figure out how to break the control and save his enemy. Another could be a story where the Lizard has a moment of self - awareness and teams up with Spider - Man to stop a greater threat. For example, a group of aliens that are attacking the city and both of them realize they need to work together.
One plot idea could be Spider - Man having to adapt to his paralysis while still trying to protect the city. He could use his intelligence to create new gadgets or strategies that don't rely on his physical abilities. Another idea is that he could inspire other disabled individuals in the city, becoming a symbol of hope for them.
A possible plot could be that Medusa somehow gets transported to Spider - Man's New York City. Spider - Man at first is cautious of her, but then realizes she is not there to cause harm. Together, they try to find a way to send her back to her own place while also dealing with local criminals who are trying to steal her powers. They could also have some comical moments where Spider - Man has to avoid looking directly at Medusa.
One plot idea could be Lady Death becoming an ally to Naruto during a particularly dark and dangerous mission. Maybe she has some unique powers that can help him defeat a powerful enemy. Another could be a story where Lady Death is sent to the Naruto universe to collect a soul, but she ends up getting involved in the complex politics of the ninja world. A third idea is that Lady Death takes on a human form in the Naruto world and becomes a ninja herself, with her own set of moral and ethical dilemmas as she tries to fit in while still having her otherworldly nature.
One idea could be that Lady Death appears in the Naruto universe during a major battle. Maybe she's there to claim the souls of the fallen, but Naruto, with his unwavering belief in life and his friends, tries to convince her to spare them. This could lead to an interesting dynamic where Naruto has to prove the value of life to a being who has seen so much death.
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.