In a relatively short period of time, a series of deaths occurred. These people who seemed to have died accidentally and had no connection with each other all had fortune slips hidden in their anuses that indicated bad luck. The case was complicated and confusing. In desperation, Chief Haga (played by Akira Shirai) ordered the detective in charge of the case, Saionji Mamoru (played by Ishii Masanori), to ask the resigned Furuhata Jinsaburo (played by Tamura Masakazu) to come out. With this opportunity, the classic combination of Furuhata, Imaizumi (played by Nishimura Masahiko), and Mukojima (played by Kobayashi Takashi) reunited. While Saionji and Imaizumi were still randomly guessing the common points of the case, Furuhata had already keenly locked his eyes on Dr. Kuroiwa Kengo (played by Ogata Ken), who was in charge of the autopsy. What was the purpose behind the calm, gloomy, sophisticated and smooth Dr. Kuroiwa's self-inflicted fire this time? This film is the fourth SP of the "Furuhata Jinsaburo" series.