Black Raven

In Leningrad Alexei Zakharzhevsky comes to the family of his uncle-academician. He was born and raised in China, went through the camps and now rehabilitated. The academician and his young wife Ada meet Alexei at the station and arrange a gala dinner. Ada's mother, Anna Davidovna, a hereditary witch, looks at the guest on the first evening: they need an heiress to pass the sorcerous craft. Can Alexei become the father of a future sorceress?

Academician Zakharzhevsky is leaving for a business trip to Moscow. To enable her daughter to prepare for a love meeting with Alexei, Anna Davidovna takes him and the household to the dacha. Wishing to strengthen the spell, Ada secretly performs the forbidden ritual, following the dictates of the ancient spellbook ...