A rural polygamist community in eastern Arizona is invaded by the legendary Black Witch moth. As the community blames these Angels of Death for a series of deadly coincidences, it is a different Evil that brings the small, isolated community to its knees, and the brink of destruction. Stranded amidst the forces of darkness, field biologist Tony Spencer finds himself on the wrong side of superstition, revenge, kidnapping, and certain death in the rugged Arizona wilderness.