Cosme, a 15-year-old boy, sets his sights and his libido on his new neighbor, Merche. After giving her a lift on his moped, and getting a glimpse of her underwear, he begins to look for excuses to wander next door. He manufactures illnesses to stay home from school and uses his free time to ogle her while she sunbathes outside. His efforts to sustain a relationship that leads to the bedroom are hampered by his amusing family, sabotaged by the maid, and jealously noted by his high school girlfriend.
| Directing | José Luis García Sánchez | Director |
| Writing | Rafael Azcona | Writer |
| Writing | Pedro Masó | Writer |
| Production | Antonio Guillén Rey | Producer |
| Production | Pedro Masó | Executive Producer |
| Production | Emilio A. Pina | Producer |
| Sound | Teo Cardalda | Original Music Composer |
| Camera | Fernando Arribas | Director of Photography |
| Editing | Pablo G. del Amo | Editor |
| Art | Miguel López Pelegrín | Art Direction |
| Costume & Make-Up | Hugo Mezcua | Costume Design |
| Costume & Make-Up | Caitlin Acheson | Makeup Artist |
| Costume & Make-Up | Manolo Carretero | Hairstylist |
| Directing | Andrés Vich | Assistant Director |
| Directing | Pablo Tébar | Assistant Director Trainee |
| Directing | Arancha Solís | Assistant Director Trainee |
