A five-man unit of cops on night patrol get more than they bargain for when they arrive at a creepy backwater town in the middle of nowhere. Entering a derelict building, the seasoned tough guys and their rookie junior, do the one thing you should never do in this kind of movie: they split up. They soon realize they've stumbled into a monstrous charnel house and descend into an ever-more nightmarish netherworld where grotesque, mind-wrenching horrors...