About the book: 2017 / Vadka and his sister Katka, young detectives from the White Goose agency, went to a summer physics and mathematics camp. Relax by the sea, swim, solve tricky problems with teachers from the university. Only in reality everything turned out to be not so rosy. Not only is the boarding house not completed, but also the science camp is combined with a military sports camp. It is logical that the mixture of young physics and mathematicians and athletes in camouflage turned out to be explosive. The former consider someone who doesn’t understand programming to be a weakling, while the latter consider someone who can’t do a hundred push-ups to be a weakling. Well, what could be worse than this? Only found treasure... because an explosion requires a detonator.