About the book: 2021 / Nineteenth century. Another Russia, ruled by the Volsky royal dynasty - descendants of the swan princess, who can turn into white swans. Here they don’t believe in miracles - they know about them, here magical creatures live among people, from here you can get into an invisible fairy-tale world... Liza Izmailova, getting ready for a ball where Grand Duke Alexander himself is invited, decides to wear her grandmother’s malachite ring. Just... But from now on, events begin to develop rapidly and intensely. A young lady, surrounded by secrets, who is cramped within the walls of her parents' house. A handsome young man, a duelist and a gambler - it is not for nothing that he was nicknamed the Black Raven, because from birth he can turn into this bird at will. Fate has already connected both, and what will their acquaintance lead to??