The years go by, and Beowulf and Wealthow are married. They have grown apart over the years and are husband and wife in name alone. Beowulf has taken a lover called Ursula (Alison Lohman), but is sterile after his affair with Grendel's mother. One day, Unferth's slave Cain finds the golden drinking horn in Grendel's lair and brings it back to the kingdom. That night, a dragon decimates a nearby town, but Unferth is spared to deliver a message to Beowulf; the beast is his illegitimate son with Grendel's mother. Removing the drinking horn has voided their agreement and Grendel's mother has sent the dragon to destroy his father's kingdom.