The Secret of the Black Mountain, or Vacation in Chudesatovo

Three friends, Shurik, Lyolik, and Tusia, spend their long-awaited summer vacation in the village. One day, the kids accidentally learn that there is a real treasure hidden in the forest near the village. There have long been legends among the... locals about the leshy, who guards this treasure, and about various malevolent spirits that inhabit the forest. In addition, there lives a witch in the village, whom the children consider an evil sorceress. Tusia's grandmother tells them that the witch's father was a partisan during the Great Patriotic War and went missing. Soon, the kids find themselves in the center of an adventure involving the search for the treasure, with a considerable dose of humor and mysticism. The chain of events leads to the children accidentally finding not treasure, but a much more valuable treasure.