Alicia's house, as always, is full of guests. Everyone is looking forward to the arrival of a new unfamiliar couple - the Butskys. And here they are, but, God, how strange! Pan Vaclav does not close his mouth for a minute and sticks his nose into every hole, and Mrs. Julia is silent like a fish, citing poor health. This wonderful couple begins to get on everyone's nerves, when suddenly Mr. Vaclav disappears. After a two-day search, his body is found in the lake and they realize that the unfortunate gentleman most likely became the victim of a maniac. The inconsolable widow decides to start searching for the killer on her own...