Mychel Arsenault

During the Crusades, Vercors betroths his beautiful daughter Violaine to Jacques. She cannot marry Jacques because she has contracted leprosy, so Jacques marries her younger sister Mara. Jacques and Mara's first child dies soon after its birth, and Mara begs Violaine to return from seclusion to restore the child to life.

When a gargoyle falls off a church during a storm, a scientist and his assistant take it back to their lab, where they are doing genetic experiments. However, the gargoyle is possessed by an evil spirit and starts to interfere in their experiments.