La Zona plot
Alejandro is a teenager who lives in an isolated residential area with a strong private surveillance device. A typical example of the many closed residential areas for the wealthy, founded out of a feeling of insecurity from the outside world. One evening, however, three young criminals break in and rob a house. An old man is killed and two of the thieves are soon arrested. A third manages to escape and has to survive within the boundaries of the residential area. By chance, Alejandro ends up in the same room as the terrified fugitive, a boy his age. Meanwhile, the residents organize themselves in an attempt to find the criminal.