Emilia and Villalba (Margarita Xirgu and Ricardo Puga) have had a happy marriage until the murder of the prostitute Lilí casted a shadow over it. Her brother, Augusto, is accused of the crime and sentenced to prison. Emilia receives the terrible news by letter through Doctor Morales, who has received a mail from Augusto in which he pleads not guilty and implores help. Request that faces Villalba’s firm opposition to get involved with a matter related to a courtier.