 Sergeant Carlos Olivarez of the Mexican Rurales (police) suspects a North American named Clark of complicity in a land swindle. He believes the woman Consuela to be in league with Clark, and further believes her responsible for the seduction and betrayal of Carlos s brother Juan, who commits suicide. Carlos befriends young Ramon Ruiz and his family, but discovers that Ruiz s intended bride is none other than Consuela. Carlos sets out to disrupt the duping of Ramon s family by Consuela, Clark, and their vicious henchman Pedro.