[Machine Translation] The year was 1887. The children of former shogunate vassals, or "wakasama-gumi," as they were called, who would have been young lords in the olden days, decided to become police officers and entered a training school in Shiba-Atago to earn a living. However, amidst rumors of pistol robberies in the city, mysterious incidents involving guns broke out at the school as well. The search for the culprit begins, involving the Wakasama, Satsuma, Shizuoka, and commoner gangs!