The falling action of this story begins after Beowulf has slain Grendel and his mother and is now on his way to the surface, as he finally escapes the home of the beasts under the murky marsh, reflecting on his accomplished mission. "Beowulf rejoiced at the sight ... his hands tight on the sword while walking through the monster's home ... for final revenge against Grendel's vicious attacks, he took the magical sword for keepsakes."
The resolution of the story is once Beowulf returns back to the kingdom of Herot with the proof that he had killed both Grendel and Grendel's mother. At the sight of the dead monsters, the kingdom rejoiced with delight that those vicious monsters would never mess with the kingdom again, ensuring that the night time is now safe again. "Then the noble protector of all seamen swam to land, rejoicing in the heavy burdens he was bringing with him ... he sought Hrothgar to salute him and show Grendel's head.