My name is Magnus Chase. Two months ago I died fighting a Fire Giant and woke up in Hotel Valhalla as one of Odins warriors. Time for a rest? I wish. When I meet Otis an informant with a lead on Thors missing hammer all I get is the name Provincetown before a wolf-masked assassin takes him out and warns me to stay away. Someone really doesnt want me to find the hammer and even if I could its rumoured to be underground guarded by powerful magic. But the giant armies are on the move preparing to invade. If I dont find it theyll ravage the Nine Worlds starting with the streets of Boston. Theres just one person who could help. Someone who demands a very high price- the gods worst enemy Loki.