What if telephone hooligans called your grandmother? And would you offer a respectable old lady to take part in a cockroach exhibition or go up to the roof to chase the cats? Aspiring operative Alexander Utkin is simply obliged to intervene in this matter. But something keeps distracting Sanya: either she needs to catch the thieves who broke into the apartment, or she needs to track down the insidious arsonist of the bakery. It’s good that the rat named Tolstoy, the detective’s faithful assistant, managed to get the decisive evidence! Now it’s clear: all these events are interconnected...