Matthias Kade, a warrior of justice who tries to save the lives of victims bitten by vampires, is thrust into a fiendish world when he discovers a link between the bite marks on a 13-year-old girl and a 6-year-old boy. He vows to save the children but, to do so, must face his own past, fears, and demons, which threaten to send him down the same path of the fiends he so despises.