The frog test confirms Julita is pregnant. This is usually a great news. In this case, no. She is a victim of premarital sex, and he, Paco, a mechanic who, according to some theories of French biologist, explained by a podiatrist friend, will not be liable. Don Ramiro, the father of Julia, is a liberal-minded man, but when his daughter tells him that she will have a son who will not parent, seeking the solution of fatherhood in his gun regulation.
| Directing | Javier Aguirre | Director |
| Writing | José Luis Dibildos | Story |
| Camera | Pedro Martín | Camera Operator |
| Sound | Antonio Pérez Olea | Music |
| Art | Adolfo Cofiño | Set Decoration |
| Art | Roberto Monleón | Property Master |
| Writing | José Luis Dibildos | Screenplay |
| Production | Juan Campos | Production Manager |
| Editing | Petra de Nieva | Editor |
| Sound | José María San Mateo | Sound Editor |
| Directing | Juan Antonio Arévalo | Script Supervisor |
| Writing | Antonio Mingote | Screenplay |
| Production | José Luis Dibildos | Executive Producer |
| Production | Antonio Martín | Production Manager |
| Production | Roberto Monleón | Unit Production Manager |
| Writing | Antonio Mingote | Story |
| Art | Adolfo Cofiño | Production Design |
| Art | Roberto Monleón | Production Design |
| Costume & Make-Up | Romana González | Makeup Artist |
| Lighting | Casimiro Dengra | Gaffer |
| Camera | Enrique Montoya | Still Photographer |
| Editing | Mary Xaire | Assistant Editor |
| Camera | Manuel Rojas | Director of Photography |