Jasper King, a wealthy rancher, appeals to Cisco and Pancho to prevent the marriage of his niece, Nancy, to Duke Ralston, a notorious gambler who Nancy is infatuated with. Cisco and Pancho break up the wedding and head for the King Ranch with an infuriated Nancy. Meanwhile, Duke beats them to the ranch and kills King in a scuffle. The infuriated Nancy told the sheriff that Cisco and Pancho had murdered her uncle. Cisco and Pancho get away, and while dodging the law, set a trap whereby Duke is revealed as the killer, and Nancy asks Cisco to forgive her.