A young prison officer, Juan, finds himself caught in unexpected chaos on his first day of work at a maximum-security prison. As he prepares for a tour, a riot breaks out. Amid the panic, Juan becomes trapped with the prisoners and, to survive, makes a drastic decision: he poses as one of them.
With fear and adrenaline coursing through his veins, Juan plunges into a dark world where loyalty codes are everything. As the riot intensifies and hostages are taken by the inmates, Juan must navigate through desperation and violence while trying to keep his double life a secret. The riot leaders, especially the charismatic yet dangerous Malamadre, begin to trust him, giving Juan a chance to influence the outcome and seek a way to escape. However, the boundaries of morality are tested, and the line between good and evil starts to blur.
As he tries to protect himself and save others, Juan faces heart-wrenching decisions and the inevitable revelation of his true identity. In this tense thriller filled with unexpected twists, every minute counts, and the fight for survival becomes a deadly game. The film explores the complexity of human nature and the extreme decisions one may make when confronted with the abyss.