Marvel's Avengers Assemble - Season 2 Episode 10 -

Thor is called into returning to Asgard as a guest to Asgard's Hall of Learning for the Learning Games as Hulk and Hawkeye follow him. The visions of Loki lure Thor, Hulk, and Hawkeye into the chambers of the Learning Games where failure is a one-way portal to Valhalla. Meanwhile, earthquakes occur on Earth as the result of Earth and Asgard being pulled towards each other by the Space Infinity Gem which is in Loki's possession.