Well, when they switch roles, Natasha in Tony's shoes might decide to use Stark Industries' resources to train a new generation of female superheroes. She could see the potential in empowering women in a different way. And she might also use the company's influence to push for more equality in the superhero world. As for Tony in Natasha's role, he would have to adapt to the world of espionage. He could end up using his knowledge of technology to create advanced disguises and surveillance methods. Maybe he'd even develop a new type of communication device that is undetectable, which would be very useful for the Avengers' covert operations.
One possible plot twist could be Natasha taking on Tony's role as the tech - savvy billionaire. She might use her combat skills and spy training in a new way to handle Stark Industries. For example, she could turn the company's focus more towards creating defensive technologies for the world's most vulnerable areas. Another twist could be Tony in Natasha's role. He'd have to rely more on his wits and physical abilities rather than his high - tech gadgets. He might struggle at first but then find new ways to outsmart his enemies using his intelligence in a more hands - on way.
If Natasha and Tony switch roles, Natasha as Tony would have a different approach to her relationships with the other Avengers. She might be more business - like with them, similar to how Tony usually handles things. For example, she could start making contracts for their services within the team. On the other hand, Tony as Natasha would be more empathetic. He'd probably be more in tune with the personal problems of the other Avengers and offer more emotional support.
Another plot point is the reactions of those around them. The Avengers or their friends might notice something strange. In some fanfictions, Pepper might be really confused by 'Tony' acting like a teenager, and Ned might be shocked by 'Peter' suddenly being so much older and more confident. It adds a lot of comedic and dramatic elements.
One possible plot point could be Natasha's stealthy approach to the Siberian location where Tony is in trouble. Maybe she has to evade guards or overcome various obstacles to reach him in time.
One interesting plot twist could be that while in each other's bodies, they have to deal with the opposite gender's social expectations at Hogwarts. For example, Hermione in Fred's body might struggle with the more laid - back attitude towards studies in Gryffindor among the boys. Another could be that they accidentally use magic in a way that reveals their situation to a few select characters, like Ron, who then has to help them keep it a secret. And a third plot twist might be that they start to understand each other's personalities and insecurities better through this strange experience, which changes their relationship for the better in the long run.
One interesting Natasha and Tony fanfiction could be about them teaming up on a secret mission that no one else in the Avengers knows about. They use their unique skills, Natasha's espionage and combat abilities along with Tony's technological genius to outwit the enemy.
One possible plot could be that Tony and Natasha reunite in heaven. They might look back on their time on Earth, the battles they fought together. They could share their regrets, like Natasha might regret not being able to do more for the world before her sacrifice, and Tony might regret some of the decisions he made during the various conflicts. They then start to explore heaven together, meeting old friends who also passed away and reminiscing about their shared memories.
One idea could be a story where Tony and Natasha have to go undercover as a couple on a mission. They start to develop real feelings during the process. For example, they might have to attend a high - society event and deal with all the pretenses while also trying to uncover a hidden enemy. Another plot could be set in a post - apocalyptic world where they are two of the few survivors and have to rely on each other completely to stay alive and rebuild society. Or perhaps a story where they both get trapped in a virtual reality world created by an enemy and have to find a way out together while also facing their own inner demons.
One interesting plot twist could be when the characters in the body - switched state have to face their own relationships from a different perspective. For example, if two rivals switch bodies, they might start to understand each other's motives better. Another could be when a character in a weaker body has to perform tasks that their original stronger self usually does, leading to some comical and also character - building moments.
Well, one possible plot twist could be that the doctor is actually involved in some sort of undercover work related to a case that NCIS is investigating. Tony discovers this and has to decide whether to continue the relationship or focus on the case. It could add a lot of drama and conflict to the story.
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.