Becoming a student of a teacher's school, Ksyusha gets acquainted with Dima. Their fast-paced romance ends in pregnancy. Dima, faced with the first difficulties, on the advice of her mother goes to Moscow. Ksyusha remains alone - with a child, without money, without housing ...

Handing the baby to the shelter and sobbing in despair, the unhappy girl finds herself on the bridge. It seems to her that salvation awaits her only there in the dark waters of the cold river ...