The Mermaid's Stone

Ekaterina Karetinikova is a contemporary writer, holder of literary awards, author of numerous books for children and teenagers. "The Mermaid's Stone" is the new book by a popular author.
Danya Bykov is an ordinary ten-year-old boy. He is already a little shy about his "childish" hobbies, but still loves to listen to his father's mysterious stories as a geologist about stones. For example, about the "mermaid's" stone that grants wishes.
One day at school, Danya is assigned to prepare a report about the Great Patriotic War. Clutching a shiny green stone in his hand, Danya wholeheartedly wishes to avoid this boring task and… soon finds himself in 1943. Now he must learn to live in a new reality where the horrors of war coexist with bravery, honor, and courage.