Summer. A dacha. Boredom… Especially when Dasha Lavretskaya isn’t around—she’s already surely being courted by some handsome guy, against whom the other boys have virtually no chance. These sad thoughts bothered Petya Kvitchko. But then, just in time, his best friend Igor arrived. Now he can swim in the river all day, eat wild strawberries, and do nothing! But Petya and Igor didn’t suspect that ahead of them wasn’t a carefree vacation, but a detective investigation. What is Igor’s neighbor hiding behind the picture on the wall? Why do local residents avoid the Wretched Field? And what is that terrible howling coming from there?..