Legendary Marshal Bass Reeves proudly witnesses the joyous wedding of his son, Bennie, and his new daughter-in-law, Cassie. But Reeves' happiness quickly turns to horror when his son murders Cassie in a fit of jealous rage and goes on the run. In the ultimate test of his commitment to justice, the aging marshal accepts responsibility for bringing the murderer to justice and rides into lawless Indian Territory to hunt down his own flesh and blood. Years later, gunfighter-turned-newspaperman Bat Masterson tracks down the marshal's daughter to learn more about her famous father and the aftermath of her brother's arrest.