There was an important event in the Khudyakov family - the eldest daughter gave birth to a son. However, the young mother flatly refuses to name the child's father. In order to give his grandson a middle name, Khudyakov instructs his son to find the father of the newborn.

In the life of every working person, one day there comes a difficult moment associated with retirement. And if this is the head of the supply department of a large plant, to whom the heroine of the film devoted her entire life, it is doubly sad.

Marina met a charming man at the resort, who gave her an unforgettable two hours of love, which remained with him until departure from the airport. Time passes and Marina comes to Leningrad to visit her prince, but he is not at home. Wandering around an unfamiliar city, she ends up with the police. What awaits a beautiful lonely girl in a huge foreign city?

1945 год, война позади. Восемнадцатилетний сержант Сергей Кружкой после тяжелого ранения возвращается домой. Узнав, что в городе орудует банда преступников, герой решает помочь органам правопорядка и в одиночку начинает расследование. После первого столкновения с бандитами Сергей попадает в госпиталь. К нему приезжают фронтовые друзья и они вместе разрабатывают план действий…