The talented producer Yonekura's murderers Kouchi and Mihara steal Yonekura's car and attempt to flee in it, but it immediately explodes. The driver of the car, Kouchi, dies instantly. Kyoto police inspector Ayanokoji is investigating a case in which scriptwriter Onda died when he drove his car off a cliff. Ayanokoji determines that Onda and Yonekura were once connected, and it also becomes clear that Yonekura was investigating Onda's case. Later, another explosion occurs, claiming another victim, and the relationship between the cases begins to come into relief.