French near Moscow

Two completely different families inherited one estate from the famous grandfather. Now they are forced to live under the same roof. The Petrikovs planned to manage the new house on their own, if not for the sudden appearance of the French relatives of Petrikoff-Lucien, who are organizing a real bourgeois revolution in their half of the house. Why relatives cannot agree among themselves in everyday matters, and how to find a common language in the most unexpected circumstances?