The renowned pianist Maxim knows that good music is akin to magic in its impact. Arriving on tour in a beautiful provincial town, he meets a direct descendant of the old count, the owner of the Daryin Klyuchi estate. As if hypnotizing the musician, Sila Mikhalych convinces him to come to his estate and play on the old family piano. The sounds of beautiful music awakened the still dormant forces of darkness, because the ancient musical instrument is a kind of portal between two worlds. Maxim will have to use all his talent and skill to be able to defeat the Dark Angel...