In modern-day Taganrog they find the record cards of war-era policemen. The FSB instructs Major Vitaly Polyakov to find the criminals-collaborators. During the Great Patriotic War the youth of Taganrog decides to create a Komsomol underground.

Enemy forces enter occupied Taganrog. Viktor Shvets gets a job in the commandant's office as a chauffeur under the name Gustav Schwartz. In modern-day Taganrog, Ukrainian saboteurs install a wiretap in Mostovoy's house.

In occupied Taganrog underground fighters are active sabotage work. In the modern city, saboteurs steal Polyakov's laptop with digitized cards of policemen.