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.

The leaders of the Port Mafia and the Detective Agency are attacked by an assassin in a mask, leaving both of them ill.