The Mironovs, after opening a portal to the parallel world of the USSR fifty years ago, did not calm down and continued researching the “portal switch” - they opened another portal to Rus' in the 13th century, the beginning of the Mongol invasion. They decide to help Rus' avoid the disastrous consequences of the Mongol invasion, and hope for the help of the USSR in this noble cause. Continuation of the book "Portal to a parallel world" 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.