Nick Fury struggles to launch The Avengers when candidates are targeted by a serial killer.

Thor, who never learned to be a good hero, throws an out-of-control intergalactic party on Earth.

Natasha Romanoff and Clint Barton seek to destroy killer-robot Ultron following a cataclysmic event.

When Ego and a young Peter Quill threaten Earth in 1988, Howard Stark and Peggy Carter form a team.