The mother of a 4-year-old girl died in childbirth, giving her a sister Tanya. But the grandmother did not take the baby from the hospital and forbade the whole village to do it. 71 years have passed, and the only thing that the orphaned 4-year-old girl dreams of on the eve of her 75th birthday is to find out what happened to her younger sister. Will there be an abandoned Tanya?