After receiving a suspicious phone call from an unknown caller, Himura and Arisugawa find a body at a condominium. With the scent of perfume lingering, they deduce that someone was there until just before their arrival.
Two members of Shangri-La, a radical group, are murdered in Tokyo and two teenagers are murdered in Kyoto. Rumor has it that a high schooler, Sakamata, aka Apollon is the perpetrator. The photos of four different crime scenes portray something significant.