Build a movie plot around this: Who broke the camera? An infected child.
Reporter Angela Vidal (Manuela Velasco), and her cameraman Pablo, are covering the night shift in one of Barcelona's local fire stations for the documentary television series While You're Sleeping. While they are recording, the firehouse receives a call about an old woman, Mrs. Izquierdo, who is trapped in her apartment and screaming. Angela and Pablo accompany two of the firefighters, Alex and Manu, to the apartment building, where two police officers are waiting. As they approach the old woman, she becomes aggressive and attacks one of the officers, biting his neck.As they carry the injured officer downstairs, they find the building's residents gathered in the lobby. The police and military have sealed off the building and trapped them inside. As people begin to panic, Alex, who remained upstairs with the old woman, is thrown over the staircase railings and seriously injured. The old woman then kills a girl, and the remaining officer, Sergio, is forced to shoot her. Angela and Pablo begin interviewing the residents, including a sick little girl named Jennifer. Her mother Mari claims she has tonsillitis, and says her dog, Max, is at the vet because he is sick as well.The injured are put in the building's textile warehouse. A health inspector in hazmat suit arrives and attempts to treat them. Suddenly, they become aggressive and start attacking other people. The residents flee and Guillem, an intern, is locked in the warehouse. The health inspector explains that they are infected with a virus similar to rabies, and the time in which the disease takes effect varies by blood type. He reveals the disease is traced back to a dog in the apartment building, and Angela realizes it's Max. When the residents confront Mari, Jennifer turns, bites her mother's face and flees upstairs.Sergio handcuffs Mari to the stairs and proceeds upstairs with Manu and Pablo. They find Jennifer but she bites Sergio, who tells the others to leave him. Manu and Pablo find the remaining residents running upstairs as the infected...