The Snow Queen took Antosha away after the Kremlin New Year tree. The boy, who had just won roller skates, clung to her cart to look at the dwarfs playing in it... Lera bent down to pick up the fallen gift, and when she straightened up, her brother was no longer nearby. Investigator Samoilov told the inconsolable parents that Antosha was not their son at all and was kidnapped by his biological father. Their child died during childbirth, and the head physician of the maternity hospital, Marusya, who was also a friend of Lera’s mother, replaced him with her own son. Marusya carried him for money, but the customers abandoned the baby after learning about the anomaly - the beginnings of wings on the back. Leroux cared little about all these passions. She knew only one thing: she had to find her brother. And investigator Samoilov will help her, especially since in his practice this is not the first case of disappearance of people with congenital anomalies...