Grendel attacks the kingdom of Herot, killing and stealing thirty men from their beds. Beowulf, the strongest of the Geats, hears of Grendel's attacks and decides to help Hrothgar. That night in Herot, Beowulf lies awake and fights Grendel, defeating the monster. However, Grendel's mother seeks revenge and kidnaps some of the Danes. Beowulf bravely dives into her lair by the lake and slays her with a giant sword he finds on the wall. Beowulf returns home victorious and later becomes king.