Hell, the king of the underworld deceived Odin, the supreme god, by capturing him in the lands of the dead with the cunning of Loki. The Valkyries sent to help him failed, and became sex slaves in the hands of the demons. In order to bargain for his freedom Odin pre-sealed the source of the current under the world tree, thereby endangering the existence of a world that would cause the collapse of the world tree. But before this Loki had captured the Valkyrie leader Freia, who came to Odin's aid. To stop the fall of the world tree, Loki needs to find 2 pieces of the key, which are protected by the 2 invincible Valkyries Sigurd and Suvia. Loki is very interested in Suvia who is Princess Priscynthia.