Well, an interesting plot could be where Fem Harry Potter's magic is seen as a new form of power in the Avengers' world. She could be recruited by SHIELD to help train the Avengers in new combat techniques using magic. Then there's the idea of a villain from the Harry Potter world teaming up with a Marvel villain, and Fem Harry and the Avengers have to put aside their differences to stop them. Also, what if Fem Harry Potter was an Avenger from the start? How would her presence change the events that already happened in the Marvel movies?
One idea could be that Voldemort teams up with a villain from the Avengers universe, like Loki. This would force the heroes from both worlds to join forces. The Avengers could use their high - tech weapons and superpowers, while the Harry Potter characters would bring their magic to the fight.
One plot idea could be that Fem Harry Potter travels back in time and meets James Potter. They form an unexpected friendship and she has to navigate the differences between their time periods while also dealing with her own identity in this new situation.
Perhaps the wizards from Harry Potter could teach the Avengers some magic. For example, Harry could show them how to use the Patronus charm for protection. In return, the Avengers could introduce the wizards to their high - tech gadgets. Iron Man could be especially interested in the magical properties of things like the Elder Wand. And then there could be a big battle where the combined powers of magic and technology are used to fight off a new, powerful enemy.
Maybe the Time Stone from the Avengers universe gets accidentally sent to the Harry Potter world. This causes chaos as different characters try to use it for their own purposes. Harry and his friends might think it could be used to defeat Voldemort once and for all, while the Avengers are desperate to get it back to prevent time - related disasters in their own universe. Hermione would be very intrigued by the science behind the Time Stone and try to study it, which could lead to some interesting interactions with the science - minded Avengers like Bruce Banner.
Maybe the Infinity Stones are scattered across the Harry Potter universe. The Avengers have to team up with Harry Potter and his friends to retrieve them. During this adventure, a love triangle or rather a harem - like situation develops. For example, Harry Potter could find himself in the middle of a relationship with Pepper Potts and Ginny Weasley. They would all need to work together to stop a new dark force that is attracted to the power of the Stones.
One idea could be that Voldemort teams up with Loki. They both have a thirst for power and chaos. The Avengers and the wizards from Harry Potter's world would have to put aside their differences to fight this new, powerful alliance. Maybe the Time Stone could be involved, with Doctor Strange and Hermione trying to figure out how to use it to prevent the villains from achieving their goals.
Maybe there's a crossover where the Infinity Stones are somehow related to powerful magical artifacts in the Harry Potter world. The Avengers and the Hogwarts students could team up to keep these powerful items out of the wrong hands. This would involve characters like Captain America learning about the wizarding world's history and culture.
One plot idea could be that Fem Harry Potter, with her unique perspective as a female in the wizarding world, becomes a sort of counter - force to Grindelwald's dark plans. Maybe she uses her female intuition and different magical approach to outwit him. For example, she could focus on using protective spells in a more creative way compared to the traditional male - dominated magic in the wizarding world.
One plot idea could be that Fem Harry Potter, while on a magical journey, stumbles upon Dracula's lair. Instead of being immediately in danger, they form an unlikely alliance to combat a common dark magic threat that endangers both the wizarding world and Dracula's domain.
One idea could be a story where the female character (fem) discovers a hidden magical ability that has been lost in the wizarding world for centuries. This could lead her on an adventure to find out more about it, maybe involving ancient spells and artifacts. Another plot could be about her forming an unlikely friendship with a character who is usually an outcast in the Harry Potter universe, like a house - elf or a half - giant. They could then work together to overcome some sort of dark magic threat to Hogwarts.