The lifeless world, including deserts, inhabited by monsters nasekomoobraznyh, people are forced to live in cities, mobile, closed protective domes. To distribute the natural resources,arranged a contest between cities, so much importance is given to the military training of the future " players." The Academy of the city comes Zenri Lafon Alseyf - a young man with extraordinary fighting skills, but has chosen a peaceful profession. But he did not manage to avoid the fate of: Lafon transferred to the Department of Martial Arts and is recorded in the 17th squad,consisting, as is commonly believed, one of the losers. But take a closer look with his new friends, the protagonist realizes that each of them has a special story - and he changes his attitude towards the need to fight.