When his sister Ruth is slain in her cabin by an unknown assailant, rancher Brian Delaney poses as a bandit known as "The Yellow Seal" in order to track down the killer. In befriending kindly Don Esteban and his daughter Teresa, Delaney incurs the enmity of gambler Howard Steele, who kidnaps the girl and spirits her away. Brian follows them into the hills, hoping to rescue Teresa but not knowing that his pursuit will eventually bring hi
