Bald Mountain looks like an ordinary hill with usual trees and usual grass, on which usual goats graze. But twice in a year, on Halloween and Walpurgis Night, come here the "others".
Only Navka and several girls, who are often mistaken for witches, can see them. Navka can see also invisible beings that live in people, eating only tobacco, alcohol and narcotics.
"We can't beat them, but we must fight with them". So consider the young people, who do not drink any alcohol, do not smoke and do not take any drugs. They come to the Bald Mountain to clean it from garbige - from syringes, bottles and cigarette packs.
Would they clean up Bald Mountain, and would Navka find her daughter, who was kidnapped by "others", you'll read about this in the book.
