Doña Maria de Guzman, a beautiful lady of Ronda has seen as Don Diego slapped his elderly father, disguised as a man pretending to be his brother (the expected return from Flanders) duels with him and kills him. Forced to flee, traveling in company with Don Juan, one of his fans, still hiding her gender. Unable to bear the intimacy with a soldier who believes him, leaving Don Juan and arrives in Madrid. Based on the play by Lope de Vega. The Adventures of Dona Maria de Guzman, a seventeenth-century noblewoman: served in a hostel, dressed as a man, dueled ... A life rich in experiences.
Silvia Heredia, since her arrival to Madrid is staying at her best friends' house, Mary. Her aim is to work as a secretary of a famous novelist. But at night the house is full of people and they confuse her with the owner of the floor. A series of misunderstandings makes her meet Ricardo Ariaga, the musician whose opera "Life begins at midnight" is about to debut. Ricardo convinces Sylvia to act as his wife. With a "rented" child they try to be the perfect family of a lonely old man.
Isabel and Gonzalo, a marriage of high society, see how their happiness is endangered due to the frequent love affairs of the husband, that will eventually lead them to interact with a pair of cynical thieves dedicated to blackmail Isabel and to defraud Gonzalo in his business
