One idea could be them teaming up to fight a new, powerful villain that neither of them could defeat alone. They'd have to combine their technological and shrinking abilities in a unique way.
A plot idea could be that the Ant Man and the Wasp get their powers swapped accidentally. This would lead to a lot of comical and also challenging situations as they have to adapt to each other's abilities. They would need to learn how to use the new powers quickly in order to face a new villain who is taking advantage of the chaos. Also, perhaps the Wasp's suit could have some hidden features that are only revealed when Ant Man tries to use it, which could add an interesting twist to the story.
A great plot could be that a powerful alien artifact has been stolen and Spider Man and Wasp are wrongly accused of the theft. They have to work together to clear their names and also find the real thief. Along the way, they discover a conspiracy that is much bigger than they initially thought and they have to use all their skills and wits to expose it.
One idea could be to explore his origin story in more depth. Maybe he has a hidden family or a past trauma that shaped him into the man of iron. Another could be to put him in a different time period, like the future where technology has advanced even more and he has to adapt.
One idea could be a fanfiction where Ant Man and Wasp team up with other superheroes to fight a new, powerful villain from another dimension. They would have to use their unique shrinking and flying abilities in creative ways to outwit the enemy.
A plot could revolve around Scott and Hope's relationship facing a test. For example, a powerful entity tries to split them apart by creating misunderstandings. They then have to work through these issues while also dealing with threats to the city. They might discover new things about each other's pasts that either strengthen or strain their bond.
One idea could be that Spider Man and Wasp team up to fight a new villain that is causing chaos in the city. Their partnership gradually turns into a romantic relationship as they discover more about each other during their battles. Another plot could involve them getting trapped in an alternate dimension where they have to rely on each other to find a way back home, and during this time, their feelings for one another deepen. A third plot might be that Wasp is in danger and Spider Man has to go to great lengths to save her, which makes her see him in a new light and start a relationship.
One interesting plot idea could be that when they swap bodies, they have to keep it a secret from their enemies. So they have to quickly learn to mimic each other's behavior and powers well enough to not raise suspicion. For example, Ant Man in The Wasp's body has to act all confident and in - control like she usually does during a mission.
Another plot idea is that the pregnancy causes a rift between Ant - Man and The Wasp. They might have different ideas about how to handle the situation, like whether she should continue being a superhero or focus solely on the pregnancy. This conflict could drive the story as they try to work through their differences and come together for the sake of their family.
Well, there could be a story where Iron Man and Nebula find themselves in an alternate universe. In this universe, they are the only ones who remember their original selves. They have to find a way to get back home while also dealing with the strange new versions of their friends and enemies. It could involve a lot of action and some really interesting character interactions as they try to adapt to this new and unfamiliar world.
Well, a plot could involve Harley going on a solo adventure where he tries to prove himself worthy of being like Iron Man. He might face some local bullies who turn out to be working for a bigger bad guy. He then uses his wits and the little tech knowledge he got from Tony to outsmart them. He could also end up in a situation where he has to save Tony instead of the other way around.