Summary 2010. Marcin is fed up with his mother's investigation and her behavior. Meanwhile, Kornelia does not give up. He follows the events of the past and of Jagoda's deceased sister, meets living participants of the bonfire in Swietoszyn. One of the visits draws someone's attention to her. Since then she has been followed, and the case from years ago turns out to be still absorbing the attention of the people involved. The police lieutenant, Bielik, takes over the investigation. Soon there is the first detention. However, the military counterintelligence wants to control the situation, Wolanska shows up with her own investigation team. The news of the events in the area where the thermonuclear test explosion was to be carried out reaches the authorities. Gierek is determined to find the culprit and punish him. Mróz and Wolanska find other suspects.

• Crime
• Drama
• Mystery