When a riot breaks out at the Raft, a prison for superhumans, just as Iron Man is taking two men there, he finds himself surrounded by several villains, not only those he and his fellow Avengers have defeated throughout their lives. With no other choice, he calls the Avengers, but perhaps not even the five heroes will be able to resolve the situation.
Meanwhile, Steve Rogers tries to accept the fact that he spent decades frozen, that this is no longer his time, that all his friends are gone. He wonders what to do in a world that is no longer his. Upon seeing the news about the riot at the supervillain prison, Steve doesn't hesitate to do what he does best: join the fight and confront criminals.
Captain America joins the Avengers to combat the riot and stop these supervillains. However, he is not the only one to join the fight; SHIELD agents Mockingbird and Hawkeye also join the heroes to stop these villains.
Now, the heroes must unite, learn how to work together, to stop not only this riot, but also to prevent the prison's radical defense protocol from being carried out, self-destructing, and sinking everyone inside.
