Law was a rare commodity on the vast cattle ranges and a man had to fight if he meant to hold on to what he owned. A rancher dispensed his owned justice when he caught those who stole his livestock, but Titus Sawyer lost more than cattle when rustlers raided his Red Diamond spread. Men were killed, too, slaughtered in a dreadful ambush, so, when he summoned his nephew Frank to track down the killers his desire to punish the culprits was deeper than justice; it was revenge.