The third colour volume in the series chronicling Tex Willer’s wild early adventures brings the hero, who had been operating on his own, back into the ranks of the Rangers. First, however, he brings to justice the corrupt Judge Bess and his henchman, the scoundrel Rosso. As a Ranger, Tex sets off with Kit Carson to investigate a series of stagecoach robberies in the Yuma area and the murders of his colleagues. In their den, they come under attack from the ‘Satanic Beauty’, who leads a band of outlaws, and a monstrous gorilla.