Well, perhaps there could be a story where they are on a mission together and Bruce accidentally gets hit by some sort of alien tech that causes him to regress in an ageplay sort of way. Tony, being the genius he is, has to figure out how to reverse it while also protecting Bruce from any harm. It could involve a lot of emotional moments as Tony realizes how vulnerable Bruce really is.
A really interesting plotline could be that in the Avengers Tower, Bruce starts showing ageplay - like behavior which at first confuses everyone. Tony, being observant, starts to understand that it's Bruce's way of dealing with the stress of being both a scientist and a potential Hulk - monster. So Tony decides to create a special area in the tower, like a super - high - tech nursery of sorts, where Bruce can relax and feel safe. This could lead to a deeper bond between Tony and Bruce as they explore this new dynamic, with Tony learning more about Bruce's true self and Bruce learning to trust Tony completely.
One common theme is protection. Tony often takes on the role of protecting Bruce in these fanfictions, especially when Bruce is in his ageplay state. Another theme could be discovery, as Tony discovers new aspects of Bruce's personality through this ageplay situation.
One interesting plotline could be where the Avengers have to rescue Tony from a powerful new enemy. They discover that this enemy has a personal vendetta against Tony and has set a trap specifically for him. The Avengers then have to use their unique skills and teamwork to break through the enemy's defenses and save Tony.
One interesting tony ageplay fanfiction could be about Tony Stark reverting to a child - like state in terms of his mental and emotional state due to some experimental accident. In this story, the other Avengers might have to take care of him like a child, which would lead to a lot of humorous and heart - warming moments.
One interesting plotline could be that future Tony brings advanced technology that completely changes the Avengers' combat strategies. For example, he might introduce new types of energy shields that are more powerful and adaptable. Another could be that future Tony has knowledge of upcoming threats that the present - day Avengers are unaware of, leading to a race against time to prepare for these new enemies. Maybe he also has some sort of personal growth or regret from his future experiences that he tries to correct in the present, which could lead to some very emotional and character - developing moments within the story.
A plotline could be her trying to live up to her father's legacy. Since Tony Stark was such an iconic figure in the Avengers, his daughter might feel a great deal of pressure. She could start off making mistakes but then learn from them and become a better hero. For instance, she might accidentally set off a new weapon she was developing and then find a way to fix the damage and turn it into an advantage against a villain.
One popular story might be 'The Young Avengers' Adventure in Ageplay Land'. It could involve the Avengers characters in a unique world where ageplay elements are incorporated in a fun and non - inappropriate way, like the characters having to adapt to different ages while still maintaining their heroic qualities.
One possible plotline could be that the Avengers are under the influence of a mind - controlling villain. They turn on Steve because he's seen as a threat to the villain's plan at that moment. Another could be a misunderstanding. For example, false evidence is planted that makes the Avengers believe Steve has betrayed them, so they accidentally hurt him while trying to stop what they think is his betrayal.
One interesting plotline could be a civilian who is caught in the middle of a battle and is saved by the Avengers in a very unexpected way, like being teleported to safety by Doctor Strange at the last second.
One interesting plotline could be Wolverine having to team up with the Avengers to stop a powerful mutant - created virus that threatens to wipe out both mutants and non - mutants alike. He brings his unique combat skills and healing factor to the table, while the Avengers contribute their various superpowers and high - tech resources.
One interesting plotline could be the return of a long - lost Avenger who has been in hiding or captivity. For example, they might come back with new powers or a different perspective, causing a shift in the team dynamics.