Mo Yongtuo (Tatsuya Fujiwara) is engaged in robot development in MM Heavy Industry, a large machinery manufacturer. The eldest son-in-law of PeopleSoft Shu Min (Morio Kazama), Zongfang Xinyi (Tsurumi Shingo), and Shu Min's son Naoki (Yoshihiko Hakamada) also worked in MM Heavy Industry. Ambitious David is also promoted to be the marriage partner of China president's daughter (Sei Ashina), with the goal of becoming the next presidential candidate. In order to celebrate the President Award and Invention Award, MM Heavy Industry held a party. The winner of the presidential award is Toya. His works are called epoch-making inventions, which have brought the robot industry into a new chapter. Tuo also developed an operating system called brutus for robots. Shu Min asked Rio Tinto to accompany the planetesimals home and acquiesced in Rio Tinto's future son-in-law. Rio Tinto also quietly said to Brutus: "I will definitely become the ruler in the near future. What is missing is the right. Now power is at your fingertips. " At this time, Yasuko Yukiya (Rina Uchiyama), Shu Min's secretary and also Tuoye's ex-girlfriend, told Tuoye that she was pregnant and extorted alimony from him. It is not only Tuo Ye who is in contact with Kangzi, but also who is the father of the child. But Rio Tinto doesn't want to hinder his plan because of the exposure.
One day, Xing Zi's brother Naoki, who is also the boss of Rio Tinto, said that he had something to talk to Rio Tinto and his colleague Dunshi Hashimoto (Koji Ookura) and called them out. All three of them had an affair with Kang Zi and were blackmailed by Kang Zi. So Naoki and the other two confessed that he wanted three people to work together to get rid of Kangzi. He planned that the three men would transport the bodies from Osaka to Tokyo via Nagoya to create an alibi. A killed Kangzi, B disposed of the body, and C disposed of the body. Naoki suggested that the division of labor among the three people should be decided by playing cards. After A killed Kangzi, in case the other two got cold feet, the three decided to write a joint book "We conspired to kill Yukiya Kangzi" and give it to A for safekeeping. As a result of the poker lottery, Naoki was responsible for killing Kangzi in Osaka and moving the body to Nagoya. Rio Tinto also received the body and transported it from Nagoya to Atsugi. Finally, Hashimoto moved the body from Atsugi to Tokyo for disposal. In this way, Osaka → Nagoya → Tokyo, a perfect killing relay began. Everything should go smoothly as planned. However, unexpected events exposed the defects of this plan ... This film is based on the original work of mysterious novelist Keigo Higashino.