Javier Morey, a young police inspector, travels to Ceuta to take charge of the El Príncipe police station. The arrival of the new boss does not seem to disturb Fran, the true boss of the police station, or his men, accustomed to bosses who do not leave the office and who last a short time in the square. But what they do not know is that Morey is in fact an agent of the CNI sent to investigate the police themselves, who are suspected of collaborating with a fundamentalist network. Upon arrival, Morey reopens the case of the disappearance of a fifteen-year-old boy, Abdu, brother of a Muslim teacher, Fatima, who is also the sister of Faruq, a powerful neighborhood drug dealer. Soon, Morey begins to sense that Fran and his buddies, who have barely investigated the case, know more than they say.