Jack Keith, a Texas Ranger, is ordered to track down a gang called the Border Wolves, whose brutal raids have terrorized the countryside. When several members of the gang murder a band of squatters, Black Bart, the head outlaw, has Keith arrested for the crime, but the ranger escapes and flees to a lonely cabin. There he meets Hope Waite, who has come to the Southwest to meet her father, General Waite, and look for her long lost sister. Keith takes her to a boardinghouse and places her in the care of Mrs. Murphy, but Bart, having met the girl earlier, discovers her whereabouts. The crook asks her to cash a check for him without revealing that he stole it from General Waite, whom he believes he murdered with the gang of squatters. General Waite arrives in town unharmed, followed by Christie McClaire, his missing daughter. After the family is reunited, Keith rounds up the Wolves and returns the general's check to Hope.