Six teenagers decide to spend the night at an old abandoned school where 27 years ago a horrible massacre occurred. The kids run afoul of the vicious crazed security guard who committed the brutal killings.
| Directing | Carlos Gil | Director |
| Writing | Tino Blanco | Screenplay |
| Sound | David San José | Music |
| Crew | Fernando Arribas | Photoscience Manager |
| Writing | Mercedes Holgueras | Screenplay |
| Production | Mariví de Villanueva | Executive Producer |
| Production | José Luis García-Berlanga | Executive Producer |
| Editing | Arturo Barahona | Editor |
| Editing | Esperanza Cobos | Editor |
| Art | Rafael Palmero | Art Direction |
| Directing | Isabel Ruiz Capillas | Script Supervisor |
