1985. Senior Lieutenant Grigory Vershinin, a firefighter, is struggling to come to terms with his break-up with his now ex-fiancée Vika, a doctor who left him for Samoilov, the hospital’s chief physician. But one day everything changes — during a fire at the children’s library, one of the staff members, Olga, nearly loses her life. Grigory rescues Olga from the flames. They fall in love and get married.

Nine months later, Olga gives birth to twins – two healthy boys. However, that very night, Vika – who is now in charge of this maternity hospital – stands in Olga and Grigory’s way. She faces a very difficult choice: an hour ago, Irina, the daughter of the first secretary of the regional committee, gave birth to a very frail baby in her maternity hospital; they were unable to save the child, but no one knows this yet. If Vika does not find another baby for Irina by morning, her career will be ruined. After agonising over the decision, Vika finds herself outside the newborns’ ward, where the Vershinin twins are lying . . .