IL RE - Season 1

Bruno Testori is the director of the San Michele prison where he uses unorthodox methods towards the prisoners. One morning the body of Nicola Iaccarino, commander of the penitentiary police and best friend of Bruno, is found, who does not want to spread the news and begins internal personal investigations that will lead to nothing. Testori then turns to the deputy prosecutor Lombardo who investigates alongside Inspector Pellegrini discovering that the commander was attacked on the roof and thrown downstairs. Testori seeks the help of Miroslav Lackovic, a former drug trafficker serving a life sentence, to try to understand what really happened but he is found hanged in his cell.

Lackovic's footprints are found on the wall from where Iaccarino was pushed. Lombardo interrogates the guards one by one to try to understand more and she learns that the Serbian paid a lot of money to his wife via money transfer, sensing that she had a drug ring in prison. Meanwhile, Inspector Massini is promoted to commander.
One evening Testori, after snorting cocaine, remembers in a flashback that he killed Lackovic because he had killed Iaccarino and threatened to tell the truth about their privileged relationship.

Testori forces a North African prisoner to become his spy by infiltrating the Muslim group in exchange for a favorable report that the director would write. The director has bugged the cells so that he can listen to all the conversations including the one between Lombardo and Ciocci, an inmate with serious drug problems who is promptly transferred to prevent him from collaborating with her. The first clashes between Slavs and Nigerians begin and Massini to restore order agrees with Goran, who in fact becomes the successor of Lackovic, and Mansur. Testori instead makes an agreement with Aniello. Lombardo discovers that Testori had returned to prison in the middle of the night on the night of Lackovic's death and asks his superior to investigate further on the director.

With a trojan, Lombardo begins to keep Testori under control and Pellegrini discovers that the manager and Iaccarino had bought a boat a few days ago. Commander Massini discovers that her colleague Piras has had heroin seized without her knowledge and turns to Testori, being reprimanded for her actions. Testori is helped by mediator Ibrahim Fatah in understanding the actions and movements of Muslim prisoners.

Testori has understood that Lombardo is monitoring him and uses another number. One evening the PM lurks under the director's house and he confronts her with a hard face. Massini discovers that Piras takes money from a prisoner. Testori continues to study Muslims, even more so after the death of a jihad leader, and discovers that Muslims communicate with the outside world through books; meanwhile the broker Ibrahim is killed by a hit-and-run driver.

Testori also asks the secret services for help. Piras explains to Massini that with the money he receives from the prisoners he pays the babysitter for her children whom she can never see. Testori asks Imam Amir to find those who make jihadist propaganda among Muslims. Lombardo asks Massini to collaborate in the investigation.

Testori decides to isolate the Muslims and his ex-wife lets him know that the secret services are opening a dossier on him. Massini starts talking to Lombardo. Testori realizes that Iaccarino understood that Lackovic wanted to get the successor of the jihad leader Abu Asifah to escape from the San Michele. The director then understands that Massini is investigating on behalf of Lombardo and confronts her by confessing that she had killed Lackovic to avenge Iaccarino's death.

Imam Amir is found dead in his cell and Muslims begin to protest. Testori takes time with the secret service executive Piazza because he wants to continue to deal with the matter personally. We understand that Farid is involved, the boy Testori had wanted to infiltrate among the Muslims who in the meantime set fire to the mattresses in the cells, starting a revolt. The guards and Islamic inmates start a tough fight outside the cells. Testori understands that the terrorist who must escape with Farid's help is Bilal, formerly Amir's right hand man, and manages to block him on the roof of the prison before a helicopter picks him up. Massini, on the other hand, has a bad time in a fight with Farid but she manages to get the better of it, killing him with a stab.
Testori was arrested because 15 grams of cocaine were found in his car and, moreover, an owner of a wine shop that the director frequented confessed to having habitually sold him cocaine. Testori is then locked up in a cell in the same prison that he directed until a few hours earlier.