Kang launches a full-scale invasion of Earth using an army of robots, and in order to save New York, the Avengers are forced to unleash the Ultrons who serve as guards for the Negative Zone Prison.

The Avengers must stop Malekith the Accursed after he unleashes an everlasting winter on Earth. Once Malekith is defeated Thor learns he has been barred from returning to Asgard.