Marvel's Avengers (2013)

S1E15 Planet Doom

Title: Planet Doom Plot: Upon his return, Thor discovers that Earth has fallen under the tyrannical control of Doctor Doom, who has manipulated the timeline to prevent the Avengers from ever coming together. The world is now a shadow of its former self, and Thor must confront the consequences of Doom's alterations to history in order to restore the heroes and save humanity from impending doom.