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.

In a universe where the heroes of the MCU live in the Old West, Shang-Chi and his pistol-packing partner, Kate Bishop, traverse the frontier, saving the innocent from the evils of The Hood.