After three years of brutal fighting in the American Civil War, Bill Barton and his best friend head west, hoping to strike it rich in the gold fields of Colorado. But an attack on the road to Central City leaves his friend dead and Bill badly injured.

Barely recovered and no longer having the heart for prospecting, Bill moves to Denver, where he finds a steady job with the city marshal's office. But as his prospects improve and he begins dreaming of a brighter future, he's faced with another horrifying act of violence, instigated by the same man who had killed his partner and left him for dead.

Bill sets out to find the killer and bring him to justice. What he doesn't realize is that, as he pursues the killer, the killer is pursuing him.