When Nebula is recruited to join the Nova Corps, she sets out to prove her detective skills.

When Avengers Tower is attacked during the holiday party, Happy Hogan must prove his hero chops.

Hela—stripped of her powers and banished to Earth—comes across a new source of power: the Ten Rings.

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.