The heroes of this intricate detective story are Stas Brykin, district police officer Menkin, his granddaughter Mashenka, Grigory Molodtsov, nicknamed Superoper, and the mongrel Snow White. It all begins with Snow White. The smart dog who helped the investigation will be thanked. For Stas Brykin The reputation of a hooligan was firmly established. And all because he broke a couple of windows with a soccer ball and somehow put a live snake in the chemist’s purse. Just think! And for some reason everyone forgot that once it was Stas who helped Super Opera Grigory Molodtsov detain the Night Ghosts gang. He was even wounded then, but he held on well! What happened this time to the boy? It turns out that someone threw a human hand under Brykina’s door! More precisely, her dummy, on which the words were carved: “Prepare to die.” Is this someone’s cruel joke or is Stas being threatened?