A group of friends is looking for a change in their lives. Believing that a film will bring them fame and wealth, they embark on the project without many cinematic knowledge, but with a famous actor in mind to star: Ricardo Darín.

Late at night, a brother and his sister ride in an elevator with their father. Suddenly, the lights go off, and the lift gets stuck between two floors. In the dark and unable to get any help, the father pushes his son through the narrow space between the shaft and the hallway. Alone in the claustrophobic box, the father and daughter stay silent, until a childish whining is heard from the shadows. Someone is inside the elevator... breathing by their side.

A fragile border separates our world from the realm of darkness, where nightmarish creatures await in the shadows. Only one thing is standing in their way: a secret order of priests, who devote their souls to protect this border. They are the 'Deus Irae'.