Beowulf
Beowulf is an ancient Anglo-Saxon story that was originally told orally, perhaps as a way to pass the time during travels. The story teaches historians about Anglo-Saxon history from the seventh and eighth centuries, and as a "hero epic," it's elements have permeated English culture.
You, the reader, will be placed in the heroic Beowulf's shoes and be tasked with trying to follow in his footsteps.