Sano and Miyata, two childhood friends, are on a trip together in a resort hotel facing the Pacific Ocean. Miyata is devoted to conspiracy theories and he tries to get Sano to believe this idea. But Sano doesn't believe it, and they fight. As Miyata's phone keeps ringing all day, Sano loses patience and takes the call. It was a phone call from Miyata's father, who was saying unintelligible things, probably from dementia. Sano hangs up the phone in confusion and tries to go home with Miyata.
Taneno, an elite police officer who became obsessed with righteousness, attacks his wife, Mitsuko, with a goya (bitter melon) for pleasuring herself with it. As he leaves prison after serving his sentence, he accidentally boards a taxi offering illegal prostitution services. On board, he meets Omitsu, a woman who looks just like Mitsuko. His presence in the car sends her away from the taxi. The driver holds Taneno responsible and forces him to serve his taxi. Back in the force, Onari, a lazy cop, and Asadachi, a new recruit, begin their investigation on a suspicious taxi.
