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

Captain Carter's mission to save Steve Rogers sets her on a collision course with new enemies.

Captain America/Sam Wilson must suit up in a colossal mech suit to battle Bruce Banner after an attempt to cure himself of the Hulk goes horribly wrong. Bucky Barnes, Monica Rambeau, Moon Knight, and others must join Sam as his new team of Mech Avengers.