When Thor, Rocket, and Groot traveled to Nidavellir to craft Stormbreaker, the only way they were going to successfully make the weapon was if they repaired and restarted the forge somehow.

Thor begins the movie in space after the Guardians rescue him, and then spends most of the film with Rocket and Groot, as they planet-hop and search for a weapon to defeat Thanos. 'Avengers ...