Returning from the East to the family ranch, Jim Anderson learns that his father has been brutally killed by an unknown assailant. His brother Frank blames the murder on the sheepherders, and in particular on the Shaughnessy brothers, who are encroaching onto Anderson land. Frank is intent on revenge and takes a notorious gunman into his employ. This sickens Jim, because young Janet Shaughnessy had been his childhood sweetheart and he is afraid that her entire family will be gunned down once bullets start flying. With the law proving ineffective, he sets out to bring his father’s killer to justice and restore peace to the valley. But his attempts lead him into incredible danger as evil secrets are uncovered and a blood feud erupts between the Andersons and the sheepherders.