Wealthy sportsman Tom Newcliffe has bagged every sort of big game trophy ... all except one ... a werewolf! Newcliffe has summoned six guests to his isolated country estate for the weekend. Once they have arrived, he announces that one of them is a werewolf and that they are all part of a deadly game he has devised. The game will end when the moon is full and the cursed soul is hunted down and killed. Each guest has led a suspicious life, each leaving a trail of dead bodies, but which one is a ravenous beast!?