The bogatyrs are expecting a new addition to their families, but their homeland must once again be saved. A huge cloud has arrived, appearing out of nowhere, threatening to blot out the entire world and turn day into night. Abandoning all family matters, the bogatyrs rush into danger. And the cunning merchant Kolyvan seemed to have been expecting this: recruiting villains from among Baba Yaga's henchmen, he attacked the principality and caused much mischief. But not all is Shrovetide for the cat. The heroes come to the aid of the prince, the city, and their faithful horse, Julius.