While Captain Jack Steele of the Texas Rangers is assigned by Major Jameson to bring in renegade leader Judith Alvarez, the suspected murderer of rancher Sam Dunning, his friend, Larry Corwin, is dismissed from the Rangers for brawling in a saloon. Sure that Jack betrayed him to the major, Larry angrily rejects his friend, who then leaves with Happy, another Ranger, to find Judith. In Pecos City, Jack and Happy pose as cowboys and inquire about Ben Sanderson, an influential rancher and political boss who has posted a large reward for Judith's capture. After witnessing a tense scene between Sanderson and another rancher, who is worried that he, like Judith, will lose his ranch because he is unable to pay his back taxes, which Sanderson is responsible for levying, Jack sees Judith and her armed men storm into Sanderson's office. During the robbery by Judith, a fight breaks out, and Judith and her men are pursued by Sanderson's men. Jack saves Judith from sure death and is wounded in the process. Grateful, Judith takes Jack to her mountain hideout to recuperate, and there Jack discovers that Larry has become part of Judith's gang. Unmoved by Jack's arguments, Larry, who is in love with the daughter of another disenfranchised rancher, threatens to reveal Jack's cover if he tries to arrest Judith. Soon after, Judith, having heard a promising report about Sanderson's cattle, organizes a scouting mission with Jack and Larry, unaware that Hank, one of her men, is a spy for Sanderson and is relaying the news to him. Before they depart, Larry alerts Don Juan Campielo, Judith's lead man, of Jack's identity, and Jack is told that he will soon meet with an "accident." On the way to Sanderson's range, Sanderson's gang, lead by Monty, ambush Judith's group. Before Sanderson's gang claims Judith, however, Jack reveals his identity and arrests her. After Sanderson's men, posing as Judith's men, execute a phony jailbreak and take Judith hostage, Jack and her gang ride to Sanderson's ranch to retrieve her. While circling the ranch house, Jack overhears Monty confess to killing Dunning on Sanderson's orders. Before Sanderson sends Judith to her death, Jack and her men break in and, following an intense gunfight, rescue her. Sanderson is arrested for murder, while Judith, who has forgiven Jack, is restored to her land and Larry is re-instated as a Ranger.