As always, a friend brings trouble—asking that for a while her father and her small dog be sheltered. So, in Yevlampiya Romanova’s house, professor of psychology Baraban Sosisevich settles in, as everyone in the family kindly began to call him, along with a chihuahua named Antonina. And now the refrigerator is stuffed with sausages, Lamp grows some kind of strange plant, and listens to children’s musical books around the clock. But—she has to catch criminals.
Her detective agency, together with Max, is contacted by Elena Rylskaya, whose entire family was killed within a short period, and the number of victims continues to grow. Just as soon as Yevlampiya talks to a helpful witness, he immediately ends up in the hospital ward or in the morgue. So what’s happening? And what does it have to do with those very expensive chocolate candies?