Sakamoto Toshiya (Kawahara Hideyuki), a young assistant head of the Yamashinkai, is imprisoned himself after his partner is killed in a feud with the Takahara family. When Sakamoto was released from prison eight years later and returned to the Yamashinkai, the organization was already under the control of the Takahara family and was involved in the sale of shabu, which was a taboo practice. Sakamoto tries to rebuild the organization with Yamahashi and his subordinate, Asada, but the Takahara family spots him and the chairman, Hirano, excommunicates him.

After taking out Sakashita, head of the Sakashita-gumi in Fukui, Himuro (Yasukaze Motomiya) learns from Kawatani (Hitoshi Ozawa) that the true mastermind behind the attack on Kyowakai Chairman Kudo (Hakuryu) is Fukumoto (Keiji Matsuda), the second chairman of the West Japan Mutsumikai. Kyowakai formally declares war on the West Japan Mutsumikai. Under Kawatani’s orders, Himuro and his men move to bring Nagoya and Gifu, Kyoto, and Hokuriku under Kyowakai control. However, Toki, head of the Toki-gumi, who rules Gifu, learns that the killing of his sworn brother Sakashita was the work of Kyowakai—and begins resisting them.

Touma and Mei find a girl who is looking for her brother. When they try to talk to her, she is attacked by Desast and runs away. Why is Desast after her? Meanwhile, as he’s looking for Kanon, Takeru Tenkuji finds survivors of Danton’s experiments and vows he won’t let them be sad like Chloe was. When he goes off to look for more survivors, he runs into Touma and Mei…

Kazuki Namioka passionately plays Shun Okimoto, the owner of the "talent of a champion. The "strong" characters such as Tsugami and Kagemura, who are also popular in the original work, are expressed as if they were possessed by the actors who play them, just as in the previous work. The central character in this production, "Shizukazu Kitaoka," the No. 2 player of the Hashiro clan, is played by Hidetsugu Shibata of the comedian "Untouchable," who is one of the most famous mahjong players in the entertainment world.

The thirteenth film in the 'Conquest' series.

The first film in the 'Japan Gokudo War' series.

The second film in the 'Japan Gangster War' series.

The ninth 'Japan Gangster War' film.

The fourteenth 'Conquest' film.

As Tamura (Yoshiyuki Yamaguchi) and his assassination squad deal with a corrupt detective, the Kyowa Clan deals with increasing disaffection within their ranks.