It is 2011. In a psychiatric hospital a patient is visited by a postulate. The patient is a retired head of the "D" Group - a secret department of the Security Service to fight against the Polish Catholic church. Murders, beatings, blackmails, provocations, robberies, those are standard methods of operation for its officers. The postulate wants to unravel the mystery of the death of priest Roman Kotlarz, a parish priest from Pelagow. It is 1976. Soon, on the streets of Radom, workers will protest against the rise in food prices introduced by the communist regime. The priest Roman Kotlarz will join the workers - Will the case of the priest's mysterious death be clarified after many years? Who will the patient turn out to be: an executioner, a judge or perhaps a victim?