Security police officer Fukuzawa Yukichi arrives at work to discover that his client had been assassinated. The assassin is already apprehended by the time he arrives, but something doesn’t quite seem right.

Fukuzawa gives Rampo a pair of glasses, claiming that wearing them would activate his ability to instantly determine the truth of any situation, and taking them off would give him the ability to tolerate the stupidity of the ordinary person.

Kunikida is being held for a murder that Rampo is certain he didn't commit. Meanwhile, Poe is determined to solve a murder mystery that has had the police stumped. Rampo has some thoughts on that situation, too.

The president of the Detective Agency is arrested, and Kunikida is missing after having blown himself up with a grenade. Meanwhile, Atsushi and Kyouka are on the run, looking for a way to defeat the true mastermind: Fyodor.

Atsushi and Kyoka help Mushitaro escape. However, they get surrounded by the Bureau, led by Ango Sakaguchi.

Suspecting that Lucy is cooperating with the terrorist organization known as the Armed Detective Agency, Jouno and Tetchou pay a visit to the cafe at where she works, in hopes of tracking down Atsushi and Kyouka.

Teruko goes head-to-head with Sigma. Tachihara rethinks the Agency’s innocence after re-infiltrating the Port Mafia.