A stereo film. The children of Baba Yaga and Kashchei the Immortal are due to be married soon. However, on the eve of the wedding, Baba Yaga’s daughter finds a piece of paper that the wind has blown straight from the desk of the failed writer Afanasy Zyablik — and rushes to his flat. Finding herself in a modern flat, the young beauty falls in love with Zyablik’s neighbour — a young doctor named Alexei — and easily wins his affection in return. Meanwhile, strange and unpredictable events begin to unfold in the writer’s flat...