Perez Blake, apparently a decent rancher, is, in fact, the head of a gang of cattle rustlers. Frank Paget, a rancher much preyed upon by Blake's men, goes to the Cattlemen's Protective Association and asks for help. Frank Blair, the head of the association, appears at the ranch, disguised as Don X, a Mexican cattle buyer. Blair soon breaks up the gang and brings Blake to justice, winning for himself the love of Gladys Paget, the rancher's beautiful daughter.
—AFI