In the year 922 A.D., the refined Arab courtier Ahmad Ibn Fadlan, representative of the powerful Caliph of Bagdad, accompanies a party of Viking warriors on their journey to the barbaric north. Ibn Fadlan is appaled by Viking Customs -- the wanton sexuality of their pale angular women, their disregard for cleanliness, their cold-blooded human sacrifices. But only in the depths of the Northland does he learn the horrifying truth: that he has been enlisted to combat a terror that comes under cover of night to slaughter the Vikings and devour their flesh.

Based on the fragments of an actual 10th-century Arabic manuscript.