In normal people, there are no seasonal exacerbations as such. For abnormal people, these same exacerbations appear in spring and autumn. But Ilya Solntsevsky and his close-knit team consisting of the old scoundrel Devil Izy, the charming former robber Soloveyka and the very mature Serpent Gorynych Motya were hit by this misfortune in the winter. What is behind this aggravation, readers will find out when they open the book and meet previously loved characters. Their adventures are always exciting and dangerous. And this time, nothing less than the life of the wife of the supreme ruler of Kyiv, Prince Berendey, is at stake. The murderers want to kill Princess Agrippina and her unborn son. Suspicion falls on the closest relatives of Berendey and Agrippina... Well, our heroes have to put skis and snowboards aside, push personal problems into the background and plunge headlong into the most special task. In fact, it was for such tasks that the elite combat unit “Special Purpose Squad” was created.