Gena, Dimka, Pasha and Senkin are the best friends. For several years they are visiting the same camp, and go hiking on the same route. The hope for the original pastime erupts with the appointment of a new counselor Andrew, but it’s fleeting, because the guy is busy with his own affairs. The boys run away from the general route and go to the Blue Lake, which allegedly should be the ore deposits of national importance. Instead of ore they find a legendary WWII tank. At this time the unit changes its route and finds the fugitives. Together they decide to find out the names of the heroic soldiers.