Valentina, a youthful and attractive woman, works as a lecturer at a prestigious university. Her daughter Olga is only sixteen, yet she is already a student there. Mother and daughter live in perfect harmony despite having completely different personalities. But one day, discord enters their peaceful life and soon turns into open hostility. The reason is a young graduate student named Pavel. Valentina falls in love with him and believes that his romantic talks about first love are meant for her. However, Pavel’s true beloved is not Valentina at all — but her daughter Olga.