Already approaching the edge, he looked back again. At this time, sharply, like a beat, a shot thundered behind him. Grisha rushed to run into the saving thicket of the forest. He did not hear the second shot. It just seemed to him that someone with all his might hit him on the shoulder with a heavy stick. "Going on a geological expedition, Grisha Smirnov dreamed only of the opportunity to see wild animals, of a romantic life in a tent, of spending the night by the fire, of hard hikes, but he had a lot of trials. Together with his comrades, he took part in solving the mystery of Rudakov's gold, the riddle of the Great Trail.