Krag Sabine has aroused the wrath of all the ranchers by stealing their land with the aid of his henchmen, led by Ace Barco; when Lafe Martin objects, the outlaws shoot him down. Lucky Randall promises Ann Martin he will avenge her wounded father. He sets up headquarters on the Martin ranch and sends for Bob Merritt and his men, the Texas Playboys (Jesse Ashlock, Leon McAuliffe, Cotton Thompson, Junior Barnard and Luke Wills). Krag organizes his remaining men for an attack on the ranch. Lucky's men get the upper hand but Krag escapes with Ann as his hostage.

Avec l'aide d'une bande de tueurs dirigés par Ace Barco, Krag Savine vole toutes les terres de la vallée. Chance Randall, un mercenaire engagé par les éleveurs, établit sa base au ranch Martin, lequel a été grièvement blessé par les hommes de Barco, et sonne le rappel de ses amis. Mais Barco attaque le ranch.