"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...

"Thor must deal with the escalating war of the Realms! To face Malekith, Loki and an all-new Kurse, she'll need a team of her own. Prepare for the triumphant return of the League of Realms! Far across the galaxy, though, another conflict is brewing--as the most powerful super-army in the cosmos prepares a surprise attack on the city of the gods! The Shi-ar Empire will lay siege to Asgardia--and their target is the Goddess of Thunder! But why? And...

"When Dr. Jane Foster lifts the mystic hammer Mjolnir, she is transformed into the Goddess of Thunder, the Mighty Thor! Her enemies are many, as Asgard descends further into chaos and unrest threatens to spread throughout the Ten Realms. Yet her greatest battle is against a far more personal foe: the cancer that is killing her mortal form. When Loki steps back into Thor's life, will it ease her troubles or only add to her pain? It's time to find out...

Thor enlists the help of Valkyrie, Korg and ex-girlfriend Jane Foster to fight Gorr the God Butcher, who intends to make the gods extinct.