Like many boys and girls whose early years included the Great Patriotic War, 16-year-old Dusya was eager to go to the front. She and her family lived not far from Sukhumi, and not a week passed without Dusya stopping by the local military registration and enlistment office. Each time the military commissar refused to grant her request, but Dusya did not give up and one day she was offered to enter an intelligence school.

The relationship between Katya and her mother cannot be called simple anyway, but here, in the midst of the working day, Katya learns that her mother never flew with her friend to the resort, disappearing from the airport in an unknown direction. Having learned from the doctor the real reason for her mother's strange behavior, Katya not only reunites with her, but also reveals a lot of new things about her mother and herself.

At the resort, chance brings together Grebentsov and Panshin, former fellow soldiers. Grebentsov had once vacationed in these places, and then he had an affair with a beautiful local girl, Nadya. And now she appears again in Grebentsov's life. The past enters the present and may change tomorrow.