Boris e Zhenya estão se divorciando. Depois de anos juntos, os dois se preparam para suas novas vidas: ele com sua nova namorada, que está grávida, e ela com seu parceiro rico. Com tantas preocupações eles acabam não dando atenção ao filho Alyosha, que acaba desaparecendo misteriosamente.
Moscow Year New Year's Eve 1987. In the 25th hospital on duty are the obstetrician and the nurse. They make the rounds, after which sit down to celebrate the New Year. Suddenly, the hospital ambulance arrives with a pregnant woman - daughter of the general, who had an accident and she started the premature birth. Despite the exhortations of doctors that gestational age is a tragic turn for the child, a fierce general, threatening with a pistol, forcing him to take delivery. A child is born dead, and intimidated doctor decides to replace it for a living. On the same day another woman gave birth to twin-girls, one of which is changed. Ironically, the two girls called Masha.
