One idea could be that each Avenger has a different reason for attempting to lift the hammer. For example, Iron Man might try using his technology to manipulate the hammer's magic. Another plot could involve a new villain who also has the ability to lift the hammer and the Avengers have to figure out how to defeat someone with such power. Or perhaps there's a situation where the hammer's power is misused by one of the Avengers accidentally.
Here's a plot idea. There's a magical rift that causes the hammer to have different lifting requirements. It's no longer just about being worthy. Now, the Avengers have to go on a quest to figure out what these new requirements are. During the journey, they face internal conflicts as they each believe they should be the one to lift the hammer for different reasons. Captain America might think it's his duty, while Thor is confused as to why the rules have changed. They also encounter various mythical creatures and challenges related to the hammer's new state.
Hawkeye. He seems like a regular human without any superpowers compared to the others. But his unwavering loyalty, his sense of justice, and his ability to stay calm under pressure could make him worthy. He's often overlooked but has proven himself time and again in battles.
The clash of different universes. Batman is from DC and Thor is from Marvel. Combining them in a fanfiction where Batman lifts Thor's hammer is exciting because it brings together two very different mythologies. Batman is a human with no superpowers (except his great intellect and physical skills) and Thor's hammer is a magical, god - like weapon.
A really cool plot idea could be that the Avengers are watching Endgame in a sort of 'alternate reality cinema' where the events in the movie start to bleed into their real world. So they have to stop the movie from fully playing out to prevent chaos in their own universe. This would involve a lot of action and strategic thinking as they try to stop things like Thanos from emerging from the screen while also trying to understand the significance of what they're seeing in the movie.
One idea could be that the mutants and the Avengers have to team up against a common enemy that is immune to their individual powers. So they must learn to combine their abilities in new ways. For example, Wolverine's healing factor could be used to keep an injured Avenger alive during a long battle while Iron Man figures out a way to defeat the enemy.
One idea could be that Harry Potter is magically transported to the Avengers' universe. He could use his magic to help the Avengers in battles, like creating protective shields with spells. Another idea is that the Avengers are somehow sent to Hogwarts, and they have to learn about magic while also dealing with threats in the wizarding world. For example, Iron Man might try to figure out how to integrate his technology with magic.
One idea could be exploring the family dynamics when the Avengers have to take care of a young superhero in training. It would be fun to see how they each contribute to the kid's growth, like Tony Stark teaching about technology and Captain America instilling values.
One idea could be the Avengers facing off against a new, powerful villain who has the ability to turn their own powers against them. This would lead to some really intense battles and strategic thinking on the Avengers' part.
One idea could be that the adopted character has a special power that the Avengers initially don't understand. This power could be something like the ability to communicate with animals, which helps them during a mission where they need to track a villain through a forest. Another could be that the character has a connection to an ancient artifact that the Avengers are also interested in for some reason, and this connection leads to a series of adventures.
One idea could be the Avengers facing off against a new, unjust system within their own superhero community. Maybe some heroes are being wrongly persecuted due to false accusations of using their powers for personal gain. This would create a lot of internal conflict as they try to clear their names and fight against the system.
One idea could be exploring the Next Avengers facing a new, powerful villain from another dimension. This villain could have unique powers that the young heroes have never encountered before, forcing them to quickly adapt and learn new strategies.