At nine years old, Matvey is very different from his classmates. He doesn't like New Year's, and prefers to spend the winter holidays in the school library. And all because, instead of a wizard with a snow-white beard, in a red fur coat and with a bag of gifts, the most terrible monster comes to him. The existence of which no one will ever believe. This is exactly what Matvey thinks, until a friend appears in his life, with whom, it turns out, you can not only have fun, but also defeat the monster! So that it no longer spoils such a magical holiday as the New Year!