*flashback to Cain killing his brother Abel* *camera zooms in on Cain stabbing Abel with a sword then pans out to a strike of lightning* Cain's decision to kill his brother has cursed his offspring for eternity, as no one can pay wergild for the death of Abel.
Thus, in the depths of the gire, lies the God-cursed brute Grendel, descendent of Cain. Day by day Grendel lives only to create destruction and death to the world he is not welcome to. *show Grendel swimming in gire with other sea monsters*
In Heorat, Hrothgar's new meadhall, Grendel breaks in during the middle of the night and kills the men sleeping. He does this night after night, creating destruction and causing panic to the Danes. *camera shows deserted meadhall*