On New Year's Eve, Viti's ex-girlfriend Marina breaks into the usual life of the Polar. And with her is a young man named Max, who turns out to be Vitya's son. Tolya and Kolya decide to open a new startup craft brewery and brew beer using the "express gassing" method. And a local eco-activist has an insidious plan for the mayor of the city, Raisa Borisovna.

After the incident at the opening of the tourist complex, subsidies from the government of the region are under threat. Vitya and Raisa go to Oleneozersk to meet with a high-ranking official to defend the project. Marina, with an experienced eye, notices the crisis in the relationship between Vitya and Polina. Irka and Tolya move into a new apartment and realize that they are not alone in it. Meanwhile, Barabula and his henchman Lyosha appear in Polyarny.