If you are already familiar with the heroes of the book Ivan da Marya, it’s time to get to know Marya’s brother Mishanya and his little sister Anya better. Mishanya finds an unusual stone that suspiciously resembles a dragon egg, and Anya promises to keep the discovery a secret if her brother gets her a puppet doll. Mishanya decides to steal a doll from a visiting booth, but not everything went according to plan. But you will find out how the guys will get out of this unpleasant story by reading the book.