The story of the growing up of the orphan Gali between the Revolution and the Great Patriotic War. Large-scale historical drama with Nina Ivanova.

After graduating from the Faculty of Geology, Vasiliy Ruban goes to Transcarpathia, where he will take part in a prospecting expedition, the object of which is oil fields. A business trip of a young man turns into a quarrel with his girlfriend, who dreams of a graduate school in the capital. Despite the assurance of an experienced engineer in the absence of oil deposits, Vasiliy continues his search, which turns into an unexpected discovery of oily spots in the waters of the river. At the same time, the geologist meets Kseniya, a local girl who has won the heart of a man.

Festive Kyiv meets victorious warriors. Among the noise and fun, Irina Gaeva feels especially lonely. No one is waiting for her, no one meets her at the station. All her family and friends died during the war. Confused, overwhelmed by grief, Irina decides to go to the village, in the battles for which her husband died.

The first postwar years. The Director of a small breeding station Avdotya Pavlovna is not immediately convinced of the anti-science of the official Lysenkov direction in biology. But making sure leaving the farm as an ordinary agriculturist, where he works on breeding new wheat varieties on the basis of the persecuted Lysenkova chromosome theory of heredity.