Thor is imprisoned on the other side of the universe and finds himself in a race against time to get back to Asgard to stop Ragnarok, the destruction of his homeworld and the end of Asgardian civilization, at the hands of an all-powerful new threat, the ruthless Hela.

Dr. David Banner inadvertently exposes himself to a high amount of gamma radiation and is horrified to discover that in moments of frustration and anger he is transformed into the incredibly powerful Hulk.