ACCA is a huge unified organization that exists in a kingdom divided into 13 autonomous regions. ACCA was formed due to a coup crisis in the past, and has been protecting the peace of the people for a hundred years. Jean Otas, deputy director of the inspection department of ACCA headquarters, is a man with the nickname "Jean the Smoker" and the most difficult man in the organization. While smoking a cigarette carelessly, he walks through the 13 districts to inspect illegal activities. The eyes that are fixed on Jean, the dangerous rumors and - snack time. Jean's peaceful daily life is slowly drawn into the conspiracy of the world!