The Huns threaten Burgundy, while Siegfried seeks Kriemhild's hand in marriage. Gunther seeks new allies and plans a journey to Iceland to defeat the Valkyrie queen. Hagen cleverly persuades Siegfried to join the dangerous plan.

Siegfried struggles with his passion for Brunhild, while Hagen makes a dark pact with Gunther to finally bring peace to the court. The final, fateful battle ensues...