Three short stories based on radio competitions, all linked by speaker Gabriel and his fiancee. Two inventors who want to patent a piston and need money, a thief who answers a phone call while robbing and a child who needs to go to Sweden for an operation are the protagonists of these stories around the radio.
| Directing | José Luis Sáenz de Heredia | Director |
| Art | Ramiro Gómez | Set Decoration |
| Art | Ramiro Gómez | Production Design |
| Directing | Antonio Montoya | Assistant Director |
| Sound | Ernesto Halffter | Original Music Composer |
| Camera | Antonio L. Ballesteros | Director of Photography |
| Directing | Mateo Cano | Assistant Director |
| Production | Eduardo de la Fuente | Production Manager |
| Writing | José Luis Sáenz de Heredia | Screenplay |
| Editing | Julio Peña | Editor |