An ancient manuscript known as the Pornomicon, holds mysterious powers and the secrets of the ancient Gods of the Flesh. Many seek it, but most come to regret it, and upon returning from a month-long crusade, a noble knight becomes possessed by the book's dark powers.

Seeking help from his friend, Brother Carmichael, a Monk, the knight unwittingly unleashes a chain of raunchy and torrid events that will have repercussions for years to come.