Odin has returned! But an air of tension now sits upon the throne. Father and son. All-Father and All-Father. Odin and Thor. Is this relationship forever doomed, and what does it mean for the Ten Realms? Determined to be the best leader that he can be, Thor makes the fateful decision to surrender Mjolnir.

Something is wrong with Mjolnir! All-Father Thor needs his hammer now more than ever before…and yet the Uru grows heavier with each passing day. What will it take for the God of Thunder to hold on to one of the most powerful weapons in the Multiverse?