A most unusual teacher of Mari history and culture appears in school. Instead of announcing the topic of the lesson he retells three tales to the children. These are modern interpretations of the legends of Onar, Irga and Chotkar, the Mari legendary heroes, "the last pagans in Europe". But the deputy school master senses something fishy and tries to expose the teacher.

Two married couples of neighbors, the Lebedevs and the Bubliks, are forced to go on a long journey together to one of the northern cities - Nezhnogore, where some are going to get divorced, and others - to spend the holidays. But crazy adventures and discoveries await them along the way.