Shawnee Lanigan, half-breed man-hunter, accepts a commission from a grieving grandfather to track down and bring to justice Marsh Kennebec, the murderer of his daughter and her husband. The old man's grandson, traumatized by the loss of his parents, has been unable to weep or mourn the loss.Lanigan sets out to track down Kennebec but must repeatedly fight for his life against both outlaws and corrupt lawmen who try to bar his path. After tracking the killer to his hiding place, he finds himself outnumbered, outgunned and standing trial for his life before a jury of killers, fugitives and thieves.If convicted, he will hang. If found innocent, he must fight a duel to the death.