The god gives the young Prince Sigmund of
Valhalla and his sister
Brunhilde, the leader of the
Valkyries, the task of defend the Petrified Forest. This is threatened by the
Vikings, led by the aggressive Hunding, who plans an invasion of the forest, in search of the secret , the possession of which prospects unlimited power. After crossing the border and invading Valhalla, Hunding finds an ally in the daughter of one of Sigmund's loyal followers, Erika, who is embittered by unrequited love. With her help the Vikings raid the camp of the Walhalla residents and kill many warriors. Sigmund swears vengeance and pursues them with the remaining men. However, thanks to other traitors in Sigmund's ranks, Hunding succeeds in capturing him and his fiancée Siglinde, Erika's sister. At the end, Sigmund escapes and, with the help of the Valkiries, succeeds in stopping the invaders and defeating Hunding in a duel. ==Cast==