Nadezhda Sergeevna and Nikita Kuzmich have been retired for a long time. The children have moved away, and life is boring and monotonous: home, TV, dacha. The couple already wants to get a dog so that it will brighten up the gray days, but one fine day a cheerful girl named Vlada rings at their door and announces the good news to the old people: she is none other than the granddaughter of Nikita Kuzmich! Once upon a time, while on a business trip, he had an affair with a certain Maria, she gave birth to a daughter, and she, in turn, gave birth to Vlad. At first, the old people are stunned by this news, but the charming girl manages to win their trust and become a real light in the window. However, this idyll did not last long...