Книга Мастеров (English: The Book of Masters) is a 2009 Russian fantasy film produced by the CIS division of The Walt Disney Company and directed by Vadim Sokolovsky.

A beautiful and kind girl, daughter of Baba Yaga, finds a magical stone Alatyr (mythology) while walking in a field.

She starts searching for the best gem-cutters and forces them to work with Alatyr, so the magical stone would become a living thing.

The plot develops, picturing a young orphan Ivan, who lives in an ordinary village but dreams of becoming the world's best gem-cutter.

One day, he makes a sculpture of his landlord's daughter Clava, showing her fatness and ugliness in a grotesque way.

The execution doesn't even start before the village faces another attack of the Ardars, who capture Ivan and Clava and bring them to Baba Yaga.

Baba Yaga goes to feed the Ardars, and Ivan and Clava are unexpectedly freed by a lovely young girl, who calls herself Katia, the Stone Countess's daughter.

So Katia gives him the Book of Masters to study but warns him about her mother's evil power.

Finally he finds Baba Yaga, who tells him about magical diamonds able to cancel Alatyr's black powers.

So Ivan takes the diamonds and hurries to the tower, where Katia's soul is being given to Alatyr in order to make the stone fully alive.

Ivan saves Katia and steals Alatyr just in time, and they rush to the passageway to the non-magical world.

These actors are mostly the ones who played secondary characters - Arthur Smolyaninov as Iangul, Valentin Gaft as the mirror, Sergey Garmash as the talking horse etc.