Katarina Mikhailovna Vassilieva has a secret. She spends most of her time online, talking to her best friend, Audrey, about the popular anime series Elf Forest, but Katarina (known to her friends as Katya) is more than an ordinary girl. She is, in fact, a princess: the future ruler of the small, little-known country of Lebedová.One day, when talking to Audrey, Katya lets slip that she's a princess, and she invites Audrey to come and stay with her in Lebedová's royal palace during the winter