Beowulf enters the lair and battles with Grendel's mother. His sword is useless against her but he discovers a massive sword and strikes her with it, dealing the final blow. Beowulf returns home and becomes the King of Geatland.
After ruling Geatland for fifty years, a dragon threatens his kingdom and Beowulf sets out to slay it. All but one of his soldiers run away and together, Wiglaf and Beowulf kill the dragon but Beowulf is heavily injured and dies.
With his dying breath, Beowulf tells Wiglaf to lead his people and asks him to build a tower. Wiglaf denounces the soldiers who abandoned Beowulf and the Geats build the tower with his ashes so that sailors could find it from far and wide.