Tells the story of Thor, prince and great protector of the realm Asgard, whose father Odin strips him of his memory and power and banishes him to Earth to learn humility, the only virtue he lacks, so that he might wield the mighty hammer Mjolnir.

"Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon--the mightiest force in the Nine Worlds. But this time the hammer isn't just lost, it has fallen into enemy hands. If Magnus Chase and his friends can't retrieve the hammer quickly, the mortal worlds will be defenseless against an onslaught of giants. Ragnarok will begin. The Nine Worlds will burn. Unfortunately, the only person who can broker a deal for...