The dawn of the ninth century brought terror from the icy realms of the North. Stretching from the emerald island of Ireland to the Caspian Sea, even the might of Charlemagne's empire was unable to stem the tide of these towering barbarians. Odin, the mightiest of the Norse gods, has returned in human form to guide the Norse heroes, including Harald Fairhair, Halfdan the Black and Eric the Red as they carve a path across an undiscovered world.