Who didn't dream of magical adventures as a child? Who didn't want anything amazing to happen to him? Denis and Polina also dreamed. They also wanted to. Especially boring summer days, when you have already tried everything you planned for the holidays, and you don't know what to do with yourself. But it turned out that something amazing happened to them. And it all started quite everyday - they just climbed into the old house in search of entertainment. But there... there they found something. An old book in an incomprehensible language. Of course, at that moment they did not even suspect that this was a very, very special book...