Feature-length Japanese anime where members of the Armed Detective Agency, based in Yokohama, battle foes with supernatural abilities. When a mysterious fog overcomes the city of Yokohama and a string of suicides take place, Atsushi Nakajima (voice of Yuto Uemura) and his colleagues from the Armed Detective Agency begin investigating. As their investigation intensifies Atsushi and his team suspect that Tatsuhiko Shibusawa (Kazuya Nakai) is responsible for the debilitating mist and they must defeat him before he destroys any more lives.