USSR, 1970s. The girl Lena has a real talent for writing - in her school essays, with incredible accuracy and warmth, not only the world around her and loved ones are reflected, but also her personal experiences, dreams, hopes. Her mother works in documentary film, and she has her own problems and her own dreams. It so happened that the daughter's adolescence coincides with the mother's midlife crisis. The story of their touching relationship is told with a kind smile and notes of sadness.