Well, perhaps the plot could involve Tony Stark's quest to collect all the Infinity Stones for some noble purpose. Maybe he wants to use their power to prevent a greater threat to the universe than Thanos ever was.
The story might be about Tony Stark discovering some unique properties of the Infinity Stones that no one else knew. He could be using his genius to figure out how to harness their power in a different way, like creating new technology based on the stones' energy.
One interesting plot twist could be that Tony discovers an unknown power of the Infinity Stones that even Thanos was unaware of. Maybe it's a power that can reverse time not just for a single person but for an entire planet. This would completely change the power dynamics in the story.
Pepper Potts would probably be involved. She might be worried about Tony's new obsession with the Infinity Stones and try to keep him grounded. Happy Hogan could also be there, providing some comic relief and practical support.
Well, he could potentially reshape the entire universe. He might use the stones to bring back all those who were lost in the Snap. Maybe he could even create a new, perfect world where there is no more war or suffering.
One possible plot could be that Tony Stark, while on a solo space exploration mission, stumbles upon the Ravagers. He initially has a tense encounter with them as they are skeptical of his motives. But then, they realize his tech can be useful. They team up to take on a common enemy, a powerful alien warlord who has been raiding planets for resources. Tony modifies some of his Iron Man tech with Ravager tech he discovers, creating a new and more powerful suit.
Well, perhaps the plot could start with Tony Stark coming across some ancient Norse texts about Jormungand while researching something completely unrelated. He then becomes obsessed with learning more about the Midgard Serpent. He might try to create a tech - based model of Jormungand to study its capabilities. As he delves deeper, he discovers some secrets about Norse magic that could potentially be applied to his technology, leading to a whole new level of Iron Man upgrades.
In fanfiction, Tony Stark may be linked to the Soul Stone in a way that it affects his character arc. The Soul Stone could represent a temptation for him. Given his complex personality, the power of the Soul Stone might either corrupt him or make him a better hero. It could also be that he is the only one who can resist the dark side of the Soul Stone's power, and this makes him a crucial figure in the fanfiction's plot related to the stone.
Maybe in a fanfiction, there is a cursed ballet. Tony Stark and Loki are both drawn to it for different reasons. Tony because of his love for all things unique and Loki because he senses dark magic. They have to team up to break the curse. During this process, Loki has to use his ballet skills (which he has been hiding) and Tony uses his tech to figure out the source of the magic. As they work together, they form an unlikely bond.
One possible plot could be Tony Stark being placed in foster care after some kind of family crisis, like his parents' sudden death. He might use his genius even in the foster home to build small gadgets, and at the same time, he could face challenges like bullies or unkind foster siblings. But he'd also find some friends who believe in his potential.
Maybe Loki gets stranded on Earth and Tony offers him shelter in Stark Tower. They start to have long conversations about power, responsibility, and their respective places in the universe. Eventually, they team up to fight a common enemy, like a new powerful alien threat that neither of them could face alone.
Well, it could be about the sister being overly obsessed with superheroes other than Iron Man and causing chaos in the Stark family. Maybe she tries to bring in other fictional elements into their real - life superhero world.