Thor embarks on an epic mission to restore his father Odin's stolen realm after the trickster god Loki seizes Midgard during a period of divine slumber, aided by the monstrous Jormangund and Nognir, ruler of the underworld. Armed with the legendary hammer Mjolnir—bestowed by Odin himself—the thunder god must navigate treacherous lands and face formidable foes to reclaim what was lost and reassert divine order over the mortal world.