Veteran cop Mike Turner (Robert Davi) is brought in to help solve a string of baffling Satanism homicides. He soon finds himself along with Capt. Hodges (John Amos) seeking to catch a murderous psycho called Bishop (Michael Ironside) who's gone on a killing spree during New Orleans' Mardi Gras. Only problem is that this killer has lost his soul to the devil and is no longer human... but a seemingly indestructible demonic being, intent on destroying the lives of everyone around Mike; and shall not stop until he has cost Mike not just his life... but his soul.