The book consists of short, captivating stories. They describe the adventures of modern-day Moscow schoolchildren—twins Vanya and Masha. During their vacation at their grandmother's in the village, they not only learn about the villagers' way of life but also find themselves in a fairy tale, where they encounter a mermaid, Baba Yaga, and the dragon Gorynych. The authors' engaging narrative style helps introduce children to educational regional information.