Kolya's colleagues are organizing a bachelor party, and they've invited Semyon. However, Semyon isn't prepared for such expenses. Ira and her friends are hosting a bachelorette party for Aida, which ends up in the police station. Vladimir and Marina are taking care of their grandchildren and trying to navigate the new technology.

The season finale! The wedding day of Kolya and Aida. Semyon tries to sell Kolya's unprofitable store to his boss. Ira wants to solve business problems her own way. Vladimir participates in all the contests to become the best guest, and Alice keeps the bride's secret throughout the wedding.