A touching story about a blind boy Sashka and his devoted friend Labrador guide Trison. The author's pre-paper version. According to the author, the last, 28th chapter of the book is not published in the paper version of the book. Source :The text of the book was translated from the original language using an artificial intelligence program. For the most part, the translation of the text is of very high quality, but in some cases, due to the imperfection of the technology, there may be incorrect phrase translations in the text, as well as single words and expressions may not be translated.