From the back cover:

The legend of the great hero Beowulf originates in one of the oldest works of English Literature, composed around 800AD. It tells of the exploits of a young Scandinavian warrior, Beowulf, who sails to Denmark to destroy a man eating monster named Grendel who has been terrorizing the local population. After a successful outcome to his mission (as well as an encounter with Grendel's horrific mother, the Sea-Hag) Beowulf returns home to Denmark and becomes king. However, there will still be the dragon to challenge our hero......