In 1837 out in a lonely meadow under a full moon, a man-beast attacks and kills a small boy on the evening of Johnny Hawk's sixth birthday. The tragic past and dark secret of his brother's untimely death eventually drives Hawk to join Hayes' Rangers where he fights in the violent Mexican American War that leaves him bitter. When a friend's wife is kidnapped and murdered Hawk becomes a vigilante killer. His reputation gets him noticed by the law but...