In the underworld, Loki sets a plan in motion. Sigrid and Leif recruit a band of warriors and launch a quest for weapons made of god-killing iron.

To obtain a bushel of enchanted apples for the Vanir gods, the warriors must bloody their swords in a fight against the beast guarding the orchard.

On the eve of war, Sigrid and her companions share fantastic tales of magic and honor. Passions ignite around camp, and Odin issues a dire warning.

The epic battle begins as mortals, giants and Vanir deities clash swords with Thor and his Aesir soldiers. A risky secret mission ends in bloodshed.