One possible plot could be about their journey of self - forgiveness. Maybe they start to realize the mistakes they made during the Civil War. Steve could be feeling guilty for not signing the Sokovia Accords and for how things turned out with Bucky. Tony might feel guilty for his extreme actions against Steve and his friends. They could gradually start to communicate again, perhaps through letters or secret meetings, and slowly work towards rebuilding their friendship.
At first, their relationship would be very strained. The guilt would make it hard for them to even look at each other. But as time passes, they might start with small gestures. For example, Steve could leave a note for Tony apologizing for some of his actions. Tony, in turn, might respond in a similar way. This could lead to short conversations, which gradually get longer as they start to open up more about their feelings.
One great fanfic could be 'Reconciliation'. It focuses on Steve and Tony slowly rebuilding their friendship after the events of the civil war. They start by having small conversations and gradually learn to trust each other again.
In many fanfics, their relationship starts off very strained. For example, in some, Steve is full of regret for how things ended and tries to approach Tony cautiously. Tony, on the other hand, is initially hesitant to forgive Steve. But as the story progresses, they often find common ground through shared goals or mutual friends.
One of the popular Steve and Tony Infinity War fanfictions is 'In the Shadows of Infinity'. It focuses on how Steve and Tony work together behind the scenes to gather resources for the upcoming battle. The story does a great job of showing their different leadership styles and how they complement each other.
One great Steve and Tony Infinity War fanfiction could be about their different strategies during the battle. For example, Steve might be more focused on leading the ground troops and using his combat skills, while Tony could be devising high - tech solutions to take on the powerful enemies. In some fanfictions, their relationship might be explored further, like how they put aside their differences from Civil War to fight together in this crucial war.
In some Civil War fanfictions, Tony might die due to a malfunction in his suit during a battle. Maybe an enemy manages to hack into it and cause a critical system failure that leads to an explosion.
Another possible antagonist could be a rogue superhero who has been influenced by the chaos of the civil war and decides to turn against Steve and Wanda. This character might have their own reasons for causing trouble, like a past grudge or a thirst for power.
The theme of sacrifice is also quite prominent. Tony might have to sacrifice some of his ideals or relationships for the greater good in the Civil War context, and Pepper might have to sacrifice her own wants and needs to support Tony. Also, the theme of trust is there. They need to trust each other even when things are falling apart around them in the war.
Conflict of ideals is also a major theme. Natasha and Tony have different views on things like superhero registration. In fanfictions, this often leads to intense arguments and moments of self - reflection as they both try to justify their stances and understand the other's point of view.