An only child, Renugío enjoys the ranch, but also the comforts and possessions he shares with his father. Fond of revelry, alcohol gives him a euphoria that translates into aggression. He's a tough guy who fights anyone who crosses him. In love with the niece of a wealthy landowner, Juan Manuel Castillo, who owns land neighboring his family's, Renugío must face the hatred of a foreman who, years before, robbed his father. Imprisoned for four years, the foreman, Eustaquio, nurtured the idea of ​​taking revenge on the one who denounced him. Upon his release, he goes to the ranch to fulfill his promise and separate the lovers. Meanwhile, the tough guy learns that he is actually Juan Manuel Castillo's son. In the end, Renugío and Eustaquio confront each other, but the avenger only manages to wound his victim, who, with various injuries, is comforted by the woman who loves him.