Married to an old and ailing antiques dealer (Julio Villarreal), lonely society wife Rosario (Rosario Granados) has an affair and becomes pregnant. She successfully hides the true identity of the child's father for 20 years -- until a large inheritance arrives for her son. Filmed in Mexico by master surrealist director Luis Buñuel, this melodrama is based on a short story by Guy de Maupassant.