Baba Yaga: Terror of the Dark Forest

A family moves to a new apartment and hires a nanny for their newborn daughter. The nanny gains the family's trust, but the older son, Egor, believes she is behaving strangely. When Egor returns home one day, his sister and nanny are missing, and his parents have no memory of his sister. Egor and his friends go on a search and discover that the nanny is actually the ancient Slavic demon, Baba Yaga.