Private detective Rita Sinyavskaya is hired by a wealthy businessman Pushnin to find his child, who was born twenty years ago by the girl with whom he had a holiday romance. Pushnin knows nothing about the child, not even his gender. But he remembers his mother’s name – Anastasia. Rita must find Pushnina’s son or daughter as quickly as possible, because her client has very little time, he is dying of a serious illness...