Grendel's mother comes to avenge her son and Beowulf pursues her. They fight and Beowulf is almost overpowered, but he kills her with a giant sword before going to find the now dead Grendel and beheading him
Returning to Herot with Grendel's severed head, Beowulf may now return to his home knowing he's saved the Danes and killed two great evils.
Beowulf and Grendel fight and Grendel falls victim to Beowulf's great strength as he overpowers him, tearing off Grendel's arm. Though Grendel manages to escape back to his cave, he is fatally injured.