Several boats are torn apart, badly mutilated corpses are washed ashore... something horrible is out in the Caribbean sea. The teeth marks on the bodies don't lead to any known animal, so scientist Dr. Stella Dickens suspects it's a so far unknown life form and strives to catch it alive. She doesn't know yet that ruthless scientists have genetically cloned the satanic creature, and won't even stop at murder to cover it's existence.