About the book: 2015 / Tanya Grotter was unlucky. While Sardanapalus, Medusia Gorgonova and other teachers are rebuilding the destroyed Tibidox school of magic, the students are sent home. So Tanya is forced to return to Moscow to the Durnev family. Moreover, take with you a whole suitcase of quarrelsome ghosts. Well, nothing! During her studies at Tibidox, Tanya managed to learn a few things, so Uncle German and Aunt Nineli will have a hard time... And finally the time comes to return to Tibidox. It was rebuilt and even better than before, but the Vanishing Floor... Something incredible is happening to it. None of those who dared to penetrate there returned back. Or did he return??..