H6 tells the story of Antonio Frau, a serial killer set free after serving 25 years in jail for the violent murder of his girlfriend. After inheriting and old motel from a relative he never knew, he sees this as a signal and takes to his holy task of relieving the grief of those who have lost the will to live. He takes his victims to room Number 6 in the motel where he 'purifies' them, while, at the same time, continues his everyday life next to his wife. A mistake leads to his arrest, and his plan to become rich and famous takes relevance.
| Directing | Martín Garrido | Director |
| Sound | Gaby Jamieson-Kemp | Music |
| Production | Mark Albela | Producer |
| Production | Denise O'Dell | Producer |
| Editing | Samuel Gómez | Editor |
| Costume & Make-Up | Inés Núñez | Costume Design |
| Crew | Sergio Delgado | Cinematography |
| Art | Sonia Aranzabal | Art Direction |
| Production | Denis Pedregosa | Associate Producer |
| Production | Martín Garrido | Executive Producer |
| Sound | José Sánchez-Sanz | Music |