Een jonge vrouw die die maanden geleden voor dood was achtergelaten in een mijnstadje in de bergen van Asturië duikt weer op. Twee rechercheurs verzamelen aanwijzingen die duiden op een beangstigend patroon van ontvoeringen en moorden. Ze voeren een race tegen de klok om een nieuwe tragedie te voorkomen.
| Writing | Patxi Amezcua | Writer |
| Camera | Josu Inchaustegui | Director of Photography |
| Directing | Patxi Amezcua | Director |
| Directing | Héctor Rodríguez | Third Assistant Director |
| Sound | Sergio Moure de Oteyza | Original Music Composer |
| Production | Rosa Estévez | Casting |
| Editing | Lucas Nolla | Editor |
| Sound | Juan Ferro | Sound Designer |
| Production | Emma Lustres | Producer |
| Production | Borja Pena | Producer |
| Art | Alexandra Fernández | Production Design |
| Production | María Liaño | Production Director |
| Production | Cristina Morales | Production Supervisor |
| Production | Loli Iglesias | Post Production Coordinator |
| Costume & Make-Up | María Porto | Costume Design |
| Costume & Make-Up | Susana Veira | Makeup Department Head |
| Costume & Make-Up | Beatriz Antelo | Hair Department Head |
| Visual Effects | Isidro Jiménez | VFX Supervisor |
| Directing | Lorena Vilas | First Assistant Director |
| Directing | Tania Muinelo | Script Supervisor |
| Art | Álvaro Monge | Storyboard Artist |
| Camera | Josu Inchaustegui | Camera Operator |
| Camera | Nicolás Pampin | First Assistant Camera |
| Camera | Gorka Rotaetxe | Steadicam Operator |
| Art | Cristina Junquera | Set Decoration |
| Sound | David Machado | Sound Supervisor |
| Sound | Daniel Fernández Durán | Boom Operator |
| Lighting | Roberto Quinteiro | Gaffer |
| Camera | Alfredo 'Unchi' Arcos | Key Grip |
| Crew | Alberto Nombela Núñez | Weapons Master |
| Visual Effects | Alberto Nombela Núñez | Special Effects Supervisor |
| Crew | Óscar Franco | Stunt Coordinator |
| Art | Jessica Poveda | Title Designer |
| Sound | Nicolás de Poulpiquet | Sound Mixer |
