While Masha and Maxim Kovalev go on holiday to Italy, their five-year-old daughter Zhenya is left under the care of her grandparents. Using two very different pedagogical approaches, Masha's and Maxim's parents begin to compete for influence over their granddaughter. But, before the return of her parents, Zhenya suddenly disappears...

The Kovalevy family is expecting for a new member which cause some light relations crisis. Their five-year-old daughter, Zhenya, decides to call her grandparents for help. The in-laws are back under the same roof with the young couple and they immediately start applying their approaches to solving problems. As a result of their joint actions, small crisis develops into a major conflict.

Masha and Maxim are going to the Netherlands for a month and leave Zhenya with her maternal grandparents in their rural home. Maxim's urban parents are also coming to help with looking after their beloved granddaughter, and at the same time to prepare her for school. Under the same roof, the two families fight, converge and unify against a common enemy.

The grandparents go to a summer resort in the Crimea to take care of their beloved granddaughter, Zhenya, who was sent to a children's camp "Artek" by her parents. The in-laws are not used to their granddaughter living apart, but they also are not used to living with each other!

The young Kovalevy have spent the last eight years in the Netherlands, but now they are back! The in-laws are happy that the children and grandchildren, finally, will be together. But over the years, much has changed: Sweet girl Zhenya turned into a teenager with a bunch of problems and conflicts with parents. Inexperienced toddlers Vika and Nikita grew up and became a very clever business babies! Maxim and Masha are too busy with their careers, and they do not have neither the time or desire to change anything. Therefore, grandparents are actively involved in the process of education! The in-laws take Zhenya, Vika and Nikita for the whole summer in a village.

This year, the Bud'ko-Kovalevy-Berkovichi family will celebrate International Women Day, send Zhenya to the University, congratulate the veterans on 9th of May (Victory Day), deal with all the difficulties of Larissa’s pregnancy, celebrate Ivan's anniversary (coincidentally Police Day), visit the Euro-2012, take a ride on a cruise ship on the Volga river, visit Paris, detain a fugitive, save the harvest for the country and the country of bureaucracy, organize Berkovich's wedding, and pay a visit to the past! And, of course, they will celebrate the New Year!