The content of the film is revealed through the story of the radio and television correspondent Svetlana Korobko, who came to the Kuban collective farm named after Lenin to create a radio essay about the chief agronomist of the collective farm Lydia Vasilyevna Biryuk. The kindergarten of the collective farm, which is supervised by L. V. Biryuk. The head of the kindergarten is speaking. Kolkhoz chairman AE Topchilov talks about LV Biryuk. S. Korobko meets S. V. Biryuk in the field; on a motorcycle goes around the fields with her. Wheat harvesting. The plane sprays a vineyard, a beet field. Inspection of the collective farm garden. The gardener talks with L. V. Biryuk. Watering fields where tomatoes are grown; L. V. Biryuk examines the corn field. Correspondent S. Korobko spends the whole summer day with the chief agronomist, being in the field, in the apiary, in the garden, in the vegetable garden, recording events on a tape recorder. S. Korobko listens to a tape recording.