How Romka and Leshka felt that the unpleasant guy who showed up in response to an advertisement for the found dog was an impostor! And the real owner of the wonderful dog lies in the hospital, struck by terrible news: his unique collection of porcelain has been stolen. “But he simply won’t survive the loss of his best friend!” — the guys think with horror and decide to return the Great Dane named Bang to its owner at all costs, and at the same time find the thief. Soon the young detectives are on the trail, it seems that the criminal is about to get into trouble, but suddenly...