Duncan is an outlaw-hunter who is tasked with capturing the rogue outlaw X, who slaughtered Duncan's hometown. Duncan kills X in a brutal fight but is then plagued by a mysterious figure, Carox, who appears and slaughters prisoners. Carox reveals to Duncan that he is actually a dark alter-ego that has emerged from within Duncan's subconscious after he took pleasure in killing X. Carox has been controlling Duncan's body and making him appear responsible for the murders. Duncan must now stop Carox from taking full control of his body.