A knight, returning from crusade, brings back to a monk a mysterious manuscript with the strange capacities: since this hero of Christendom entered in his possession, it is haunted erotic visions and became a true animal of sex. While he at once proves it to the young beginner attached to the monk, this one is plunged in the reading aloud of the manuscript, and, without wanting it, he summun and unchains a terrible phallic creature which seizes entire the body of the knight…