Dazai Osamu and Nakahara Chuuya are attacked by GSS soldiers in the middle of investigating an explosion caused years ago by Arahabaki.

Port Mafia executive Ace captures Fyodor, who was behind the destruction of the Moby Dick. Keeping him captured may prove to be more difficult.

Louisa reunites with Fitzgerald, but he’s not quite the man he used to be.

Tensions between the Detective Agency and the Port Mafia run high as they both scramble to save their own leaders while avoiding an all-out war.

Mori Ougai and Fukuzawa Yukichi fight to the death in a desperate bid to save the organizations they lead from falling into a devastating war.

The gifted responsible for the virus is on the run as Nakagawa Atsushi and Akutagawa Ryunosuke chase after him. Meanwhile, the Detective Agency has the Rats’ hideout surrounded to try to capture Fyodor Dostoevsky.

Rampo gets a ride to the police station, but the officer doesn’t seem to be who he says he is.

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 Detective Agency receives an urgent request from the government to investigate a series murders perpetrated by the same culprit.

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