Rampo receives an invitation to a detective game from none other than E. A. Poe. He's indifferent at first, until Poe reveals what the reward would be should he win.

Atsushi searches desperately for the control terminal, which he would need to stop the Moby Dick from crashing into Yokohama. He's greeted by Akutagawa and Francis, both of whom have other plans in mind.

Atsushi and Akutagawa fail to call off the Moby Dick's descent. They search desperately for other ways to protect Yokohama.

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

The Detective Agency president is in safe hands for now, but unless he or the Port Mafia boss dies, a full-scale war between the two organizations is inevitable.