During the siege of Leningrad a Nazi bombshell destroys the storage of an experimental medicine institute where deadly dangerous viruses were kept. Severe winter weather prevents an epidemic from breaking out in the besieged city. But the spring is coming, and Leningrad is on the brink of bacterial catastrophe. Doctor Maritskaya and NKWD officer Andreew have only three days to save the city.
Inna lives with her dad and little brother in a small town. Her life changes when a new girl, Masha, comes to her school. They become friends. But Masha is murdered by a maniac serial killer, who kills teenage girls in the town. Inna goes to church for the funeral service. There she meets the priest's son Ilya, whose sister was also murdered.
A young woman (Nastya) arrives in Moscow to study at the Conservatory and thinks her sister (Alya) will help her with a place to stay. Her sister, however, can only offer her to live in the hospital, where her son is waiting for a kidney transplant. Meanwhile, the only source of money for them is a rich family, more exactly Dmitri, a football related "businessman", for whom Alya has been working as a cleaning lady. Then comes the romance between Nastya and Dmitri, but...
