In the story inspired by a real event, the withdrawn Karel lives in a world of order and strict rules, in which there is not much room left for empathy. He visits his extroverted and bohemian mother Matylda, a former bar singer, more or less out of obligation. Matylda unexpectedly loses her apartment and Karl has no choice but to take her in. But their coexistence is a disaster for him. Especially when it comes out that Matylda is developing Alzheimer's disease. As a possible solution, it is suggested that Karl's son Pavel, an irresponsible flutist who despises his father's profession as executor, will take care of the peculiar grandmother. The common household of three different temperaments of different generations brings a number of humorous moments, with the progressing symptoms of the disease rather tragicomic. At first glance, a hopeless situation turns the family's life upside down, but by not giving up, they do something important not only for Matylda, but also for themselves.