summrize the situation for the danes

The poem begins with a brief genealogy of the Danes. Scyld Shefing was the first great king of the Danes, known for his ability to conquer enemies. Scyld becomes the great-grandfather of Hrothgar, the king of the Danes during the events of Beowulf. Hrothgar, like his ancestors before him, is a good king, and he wishes to celebrate his reign by building a grand hall called Heorot. Once the hall is finished, Hrothgar holds a large feast. The revelry attracts the attentions of the monster Grendel, who decides to attack during the night. In the morning, Hrothgar and his thanes discover the bloodshed and mourn the lost warriors. This begins Grendel's assault upon the Danes.