An air-hostess is pregnant but she does not know the name of the father, a foreigner. When the baby is born, she gives it to her sister that has already two children. The child grows up as another member of the family. Although the adults keep the secret, the children know that he is different.
| Directing | Manuel Gutiérrez Aragón | Director |
| Writing | Rafael Azcona | Writer |
| Writing | José Luis García Sánchez | Writer |
| Writing | Manuel Gutiérrez Aragón | Writer |
| Production | Fernando de Garcillán | Associate Producer |
| Production | Andrés Vicente Gómez | Producer |
| Production | Manuel Lombardero | Associate Producer |
| Sound | Milladoiro | Music |
| Camera | Teo Escamilla | Director of Photography |
| Editing | José Salcedo | Editor |
| Production | Eva Leira | Casting |
| Art | Gerardo Vera | Art Direction |
| Art | Ana Alvargonzález | Set Decoration |
| Costume & Make-Up | Eva Arretxe | Costume Design |
| Costume & Make-Up | Romana González | Makeup Artist |
| Costume & Make-Up | Carlos Hernández | Assistant Makeup Artist |
| Costume & Make-Up | Josefa Morales | Hairstylist |
| Production | José Luis García Arrojo | Production Manager |
| Production | Luisa García | Assistant Production Manager |
| Production | Marco Gómez | Assistant Production Manager |
| Directing | Eduardo Armiñán | Assistant Director |
| Directing | Carlos Dávila | Second Assistant Director |
| Directing | David Ortiz | Second Second Assistant Director |
| Directing | Vicente Vieitez | Second Second Assistant Director |
| Sound | José Antonio Bermúdez | Sound Mixer |
| Sound | Marco Bermúdez | Sound Effects |
| Sound | Luis Castro | Sound Effects |
| Sound | Antonio Illán | Sound Recordist |
| Sound | Carlos Garrido | Sound Mixer |
| Sound | Gilles Ortion | Sound |
| Sound | Antonio «Mármol» Rodríguez | Boom Operator |
| Sound | Jaume Puig | Dolby Consultant |
| Crew | Reyes Abades | Special Effects |
| Lighting | Pablo Carrión Bautista | Electrician |
| Lighting | Juan Carrión | Gaffer |
| Lighting | Pablo Carrión | Electrician |
| Camera | Emma Fernández | Second Assistant Camera |
| Camera | Pablo Hernández Smith | Assistant Camera |
| Crew | Juan Carlos Rodríguez | Video Assist Operator |
| Camera | Pipo Fernández | Still Photographer |
| Camera | Paco Sánchez Polo | Second Assistant Camera |
| Costume & Make-Up | Pilar Tavera | Wardrobe Master |
| Costume & Make-Up | Macarena Soto | Assistant Costume Designer |
| Editing | Manuel Laguna | Assistant Editor |
| Editing | Rosa Ortiz | Assistant Editor |
| Directing | Usoa Urbieta | Script Supervisor |
| Crew | Ángel Megino | Transportation Coordinator |
| Production | Marta de Antonio | Production Assistant |
| Production | Rubén de Pablo | Production Assistant |