Desc: El Sereno: Directed by Oscar Estévez, Joaquin Mauad. With Gastón Pauls, César Troncoso, Alvaro Armand Ugon, Valentina Barrios. Fernando (Gastón Pauls), a lonely and tormented man, gets a job as a night watchman in a warehouse close to being demolished. The building is huge, with several floors and wings interconnected by a confusing network of corridors and stairs. One night, Fernando hears strange noises and finds a gate open that should be closed. From that moment on, nothing will be the same.