Betrayal evokes the complex relationships of a family that owns a large law firm. It consists of parents, Don Julio Fuentes and Doña Pilar, who run their company with an iron fist, and their children: Almudena, Roberto, Isabel, and Claudia. Problems erupt when Don Julio gathers his family to tell them that he is suffering from a terminal illness: he has taken stock of his life and made several decisions. This news comes as a shock to his children, who see their world begin to crumble. The perfect family begins to shatter.