Samejima (Riki Takeuchi), a member of the Igarashi group, thwarts a plan by Yano (Takashi Matsuyama), a member of the Hanamori group, to crush the group. Yano asks for an apology, but Samejima is reluctant. Meanwhile, Dojima (Yoshiyuki Yamaguchi), an executive of the Hanamori-kai, plans to expel Yano after his plan fails, and falsely tells Kurata, a group member who admires Samejima, that Yano is plotting to assassinate Samejima. Kurata (Go Ibusuki) is seduced by this plan and carries out the assassination of Yano without Samejima's knowledge...
Ryuji Inahara changed the name of the Inahara-gumi to the Inahara-kai, and accordingly unified the emblem of the Inahara-kai. Then, in 1961, Inahara-kai opened a new headquarters office in Roppongi, Tokyo. Further incidents and conflicts await Ryuji and the Inahara-kai.
A group of terrorists has taken hold of the largest dam in Japan. They also capture the workers as hostages, and demanded $5 billion yen from the government with a 24 hour deadline in exchange for the lives of the hostages. To make things more complicated, there was a snowstorm and no one can get in or out near the area. Fortunately, the terrorists did not capture Togashi, the dam controller, and he is the only person who can rescue those hostages from the terrorists...
In 1999, the human race had reached the time of the end. Military balance is lost in the wake of the nuclear test of a certain country, the threat of nuclear war had been swept.