Don't give up on us

When Clint Barton wakes up in an apocalyptic world, where the villains rule without mercy, he's very confused. The Avengers should have taken care of this. He doesn't give up hope though. But when he finds the scattered Avengers one by one, his hope slowly diminishes. Soon he realizes that it's up to him to gather to Avengers together again and fight as a team and defeat the evil that rules everything. He will do anything to save the people that he fights so hard to protect. Even if it means sacrificing everything.