The young Kovalyov family is expecting a new addition – Masha is in her final month of pregnancy. And, as with any couple at this stage, the young married couple are experiencing some difficulties, and a minor crisis in their relationship is looming. However, to their five-year-old daughter Zhenya, these difficulties do not seem trivial at all. And the girl, who is wise and independent beyond her years, solves the problem in her own way — she calls on her grandparents for help. 

The mother-in-law, father-in-law, and the couple’s parents find themselves living under the same roof as the young family and immediately set about trying to save the marriage. But each set of parents has its own approach to solving the problem. In the battle for peace in the family, as they say, all is fair. And as a result of their ‘joint’ efforts, the ‘minor crisis’ escalates into a ‘major conflict’.