After being betrayed by her boyfriend, Catalina Negrete succumbs to family pressure and marries Sebastian, a millionaire rancher. Sebastian is very much in love, but Catalina has married him only for the life of luxury he surely would give her. She and her family get the shock of their lives when she arrives at the ranch to discover that Sebastian lied, that he was only the ranch foreman. In reality, Sebastian was indeed the legitimate son of the wealthy rancher but was testing Catalina to see if she had married him for his money. Proving that this was so, Sebastian takes his revenge by refusing to give her a divorce and forcing her to live as the wife of a poor ranch worker. Little by little, Catalina begins to fall in love with her husband until she finally does not care that he is only a poor working man. But it's too late; Sebastian reveals that he is wealthy and it is he who wants the divorce. Things get complicated when Carmelo, the ranch foreman who took Sebastian's place as the ranch heir and who believes himself to be the bastard son of Sebastian's father, Don Lupe, refuses to return Sebastian's birthright, keeping the ranch and all of the property and money that his father had left him. Carmelo, who has also fallen in love with Catalina, puts her in a quandary: He will give Sebastian back all his money and property only if Catalina will agree to marry him...
