When Thanos steals the quantum tunnel, the Avengers embark on a mission to stop him from changing history.

Loki declares he wants to be an Avenger, so Iron Man decides to make Loki an "Avenger In Training." It's a great plan until Thanos arrives on Earth looking for Loki.

The Environmental Clean-up Conference is off to anything but a smooth start when Tony Stark realizes his fellow competitor is his rival Justin Hammer!