The U.S. government, eager to protect the nation's avocado supplies, recruits feminist professor Margo Hunt to make contact with the Piranha Women, an all-female tribe who believe men are only good as a source of food.
A satanist cult leader is burnt alive by the local church. He vows to come back to hunt down and enslave every descendant of his congregation, by the power of the book of blood contracts, in which they sold their souls to the devil.
Mary Shelley reveals the main characters of her novel survived: Baron Henry Frankenstein, goaded by an even madder scientist, builds his monster a mate.