Synopsis: A politically taut and fast-paced thriller: Juan, a rookie prison guard is knocked unconscious in a freak accident his first day on the job, and is brought into an empty cell to recover. He wakes up to find a vengeful uprising underway - if he's identified as a guard, he's dead meat. To survive, Juan must pose as a prisoner and conspire with the riot's leader, the deeply violent Malamadre (Luis Tosar, The Limits Of Control).