Maybe there's a story where Iron Man and Ms. Marvel team up to face a new, powerful villain who is causing chaos across the globe. They could combine their different powers and skills - Iron Man's technological prowess and Ms. Marvel's shape - shifting and energy - projection abilities - to take down the bad guy.
A good plot could be that Ms. Marvel accidentally gets caught in one of Iron Man's experimental time - space devices. They end up in an alternate universe where they have to rely on each other to get back home. Along the way, they learn more about each other's strengths and weaknesses and form a strong bond.
A fanfiction could involve Spider - Man and Ms. Marvel teaming up against a villain who has the power to manipulate emotions. They would have to rely on each other's emotional strength as well as their superpowers. Spider - Man's sense of responsibility and Ms. Marvel's determination would be key in this fight.
Another fanfiction concept could be a time - travel story. Ms. Marvel accidentally sends herself and Spider - Man back in time. There, they have to adapt to the different era while also trying to find a way back to their own time. Along the way, they meet younger versions of some of their superhero friends and enemies. This could be a fun exploration of different time periods in the Marvel Universe and how these two heroes interact with the past.
There might be such fanfiction out there in the vast world of fan - created content, but it's not a common or officially recognized storyline. Fanfiction often explores wild and creative ideas that deviate from the main canon of the characters.
One interesting storyline could be Spider - Man and Ms. Marvel teaming up to stop a new super - villain who has the power to manipulate time. They would have to use their unique abilities to navigate through different time periods and figure out the villain's plan. Another could be a story where they accidentally swap powers for a short time, leading to some humorous and challenging situations as they get used to each other's powers.
In some fanfictions, the X - Men could be allies. Wolverine's combat skills and healing factor, along with Professor Xavier's telepathy for communication and strategy, would make them strong partners. Storm's weather - controlling abilities could be used in combination with Spider - Man's acrobatics and Ms. Marvel's strength in battles against powerful enemies that require a diverse range of powers to defeat.