Antonio and Teresa are a couple who live in a flat in San Sebastian. Ursula Michelena, an elderly woman over 70 years old, lives on the top floor. Ursula is secretly in love with Antonio, whom he continually spies from one of the windows of her house. One night she sees Antonio and Teresa making love and that fact excites her violently, in such a way that she asks Antonio for a secret appointment and tells her that she is pregnant and that the son she is waiting for is his. Úrsula, according to her version, has become pregnant looking at Antonio and Teresa making love.
| Directing | Jaime de Armiñán | Director |
| Writing | Concha Grégori | Writer |
| Writing | Juan Carlos Eguillor | Writer |
| Writing | Jaime de Armiñán | Writer |
| Production | José Manuel M. Herrero | Line Producer |
| Production | Francisco Hueva | Executive Producer |
| Sound | José Nieto | Music |
| Camera | Teo Escamilla | Director of Photography |
| Editing | José Luis Matesanz | Editor |
| Costume & Make-Up | Vicenta Palmero | Hairstylist |
| Costume & Make-Up | Julián Ruiz | Makeup Artist |
| Directing | Kuki López Rodero | Assistant Director |
| Sound | Francisco Peramos | Sound Engineer |
| Camera | Antonio Escamilla | Camera Operator |
| Camera | Miguel Garrido | Assistant Camera |
| Camera | Laureano López | Still Photographer |
| Camera | Antonio Pueche | Assistant Camera |
| Costume & Make-Up | María Teresa Iglesias | Costumer |
| Editing | Clemente Bermejo | Assistant Editor |
| Editing | Claudio García | Assistant Editor |
| Directing | Isabel Mulá | Script Supervisor |
| Production | Esteban Gutiérrez | Production Assistant |