The Armed Detective Agency continues to evade the Hunting Dogs, but Detective Ranpo Edogawa is working on a plan to clear their name and prevent global chaos. As a first step, Ranpo and Atsushi Nakajima aim to convince Genichirou Fukuchi, the leader of the Hunting Dogs, to grant them amnesty, citing his past connection to Yukichi Fukuzawa. However, Fukuchi's true intentions remain uncertain, as he is not the straightforward individual he appears to be.