When New York society beauty Madeline Hammond buys a ranch near the turbulent Mexican frontier, she gets more than she bargained for including a bloody revolution and the ravages of a bandit raid. Additionally, she is abducted by Mexican guerillas and finally rescued by Gene Stewart, the daring and legendary El Capitan, with whom she falls in love. Then when the tables are turned, and Stewart becomes the captive and is sentenced to death by the bandits, Madeline and her vaqueros ride into the lawless wilds of Mexico in a desperate bid to save his life.