One weekend, after years without seeing each other, several friends, over whom hangs the shadow of a murky episode of the past, meet in a house in the mountains. During the first night, a strange incident takes place that leaves them isolated.
| Production | Mikel Lejarza | Producer |
| Production | Mercedes Gamero | Producer |
| Costume & Make-Up | Irene Orts | Costume Design |
| Art | Isabel Viñuales | Art Direction |
| Production | Enrique López Lavigne | Producer |
| Camera | José David Montero | Director of Photography |
| Production | Yolanda Serrano | Casting |
| Sound | Lucio Godoy | Original Music Composer |
| Production | Juan Moreno | Executive Producer |
| Editing | Carolina Martínez Urbina | Editor |
| Production | Eva Leira | Casting |
| Production | Belén Atienza | Producer |
| Writing | David Monteagudo | Novel |
| Directing | Jorge Torregrossa | Director |
| Production | Ricardo García Arrojo | Executive Producer |
| Production | Fernando Bovaira | Producer |
| Production | Koldo Zuazua | Production Manager |
| Costume & Make-Up | Manuel Bonillo | Costume Design |
| Lighting | Diego Moyano | Gaffer |
| Writing | Jorge Guerricaechevarría | Screenplay |
| Writing | Sergio G. Sánchez | Screenplay |