In the time when Ragnarok, the fall of the gods, has been predicted to occur, Fenris Fenrir is on a desperate quest to locate the reincarnated Balder, to seek his help in changing the world, before the valkyries find him and civilization is doomed.
The golden city of Prontera is under attack from Himmelmez, a Valkyrie and necromancer who commands the armies of Nilfheim. Her master, Freya, seeks the pieces of Ymir's heart, Midgard's lifeforce, in order to ensure that her reign will last another 1,000 years. Chaos and his companions enter Himmelmez's flying fortress to stop the Valkyrie, but they'll need the assistance of Loki if they hope to come out alive.