The café that the Detective Agency members frequent is attacked by The Park, who are after the Guild’s property.

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.

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.