In this TV-series the events of the beginning of the 20th century in Russia are highlighted. Revolutioners, terrorists, spies - and investigator Putilovskii and his team fight them as best they can.

Thirty years have passed since Zhenya and Nadya met—they broke up, and Nadya moved to Leningrad. The friends still go to the bathhouse, and now they are joined by Konstantin, Zhenya's son. Uncle Pasha and Uncle Sasha persuade Kostya to arrange a New Year's miracle for his father and send him to St. Petersburg. Nadya's daughter lives at that very address, and on the same day, her fiancé, Irakli, is planning to propose to her.