Do you think only people have criminals? Nothing like this! Among animals there are also all sorts of unpleasant personalities who do not allow a well-bred animal to live. But fortunately for the latter, the brilliant detective Sherlock Zay lives in the Middle Forest - he certainly will not let criminals go free and will bring anyone to light. And it doesn’t matter that he was neither tall nor stature, and his sense of smell was too bad. But Sherlock Zay can always rely on his friend the drake Waterson - a certified taster and simply a wonderful comrade. And of course, the detective will never refuse help to the somewhat simple-minded, zealous police inspector Lystrade, even if he did not ask for it at all...