In present day St. Petersburg, police major Igor Grom, an honest and skilled cop with unconventional methods, pursues a vigilante murderer in the mask of a plague doctor.

An impressing war drama, a story of life and heroism of Naum Balapan - an academic psychiatrist, Doctor of Medicine, a chief doctor of the Sevastopol psychiatric hospital since 1922. With the help of his wife he saved dozens of innocent people from Genocide during Nazi Occupation until his tragic death in 1942.

When night falls on St. Petersburg, there comes a time when it seems that everything freezes. The past, the present and the future exist simultaneously. There are two on the bridge: He is a shy and lonely dreamer, who photographs the city all night long, feels sincere sympathy for strangers, and even houses. She is a delicate girl, in love, her face is light, but tear-stained. Four nights of revelations and romance, sadness and smiles, kisses and embraces. But one day the morning will come.

Olga brings up two children from different marriages, cares about her alcoholic father and tries to adjust her personal life. The eldest daughter Anya is studying in a vocational school, she thinks that she is the only adequate member of the family, and in her life everything will be different. The younger son Timofey, whose father returned to the first family in Azerbaijan, believes that he is already a man, although he is only 11 years old. Olga's father, Yuri Gennadievich, a former football player, drinks hard and constantly lies, which often leads to scrape. And sister Lena is trying to live at the expense of men - mostly married. Eternally saving relatives from troubles, Olga lives a strange life and rarely thinks of herself until Grisha, a young and positive driver of the “Sable” hearse, falls in love with her.