Touring the prison where he's about to start work as a guard, Juan Oliver (Alberto Ammann) is accidentally knocked unconscious and placed in an empty cell to rest. Awakening to find a full-scale riot in progress, Juan's only hope for surviving is to pretend to be a new inmate and side with Malamadre (Luis Tosar), the rebellion's brutal ringleader, as the violence escalates in this gripping Spanish thriller. 111 min. Widescreen (Enhanced); Soundtrack: Spanish; Subtitles: English, Spanish; "making of" documentary; theatrical trailer. In Spanish with English subtitles.