Having abandoned his military past, Yukichi Fukuzawa now works alone as a paid bodyguard, relying on his lethal sword skills. Yet the freelance life is fraught with setbacks, and it is during one such misstep that he encounters a sharp‑tongued youth named Ranpo Edogawa. Together they become entangled in an odd homicide case, and the fallout of that investigation sparks the birth of the Armed Detective Agency. At present, Ranpo pursues a prodigious criminal who possesses the uncanny talent to commit an immaculate offense. While unraveling the mystery, he soon learns of a sophisticated scheme aimed at annihilating the entire Agency. Despite being warned of this trap, the Agency continues its chase of wrongdoers, only to find themselves framed for the very crime they sought to stop in the shadows unseen. Now labeled as wanted terrorists, the surviving members must devise a way to clear their names—perhaps even by allying with former adversaries.
