The man has returned to his old town: Jin Kaito (Lo Kwon), known as “Jin the Gigolo”. “Make every woman happy” is Jin’s motto. In his hands, any woman melts into ecstasy, led to heavenly heights of pleasure she’s never known. Waiting for this love-and-peace-driven man is his old yakuza acquaintance, Minoh (Kenichi Endō). The boss’s daughter, Maki (Koharu Tono), has been kidnapped by a rival gang, and Minoh begs the newly returned Jin for help, which he immediately refuses, but when it’s revealed that he had slept with Maki just before the abduction, things spiral out of control. Now, Jin is dragged into a full-blown rescue operation!

Dragged into a yakuza conflict, Jin (Lo Kwon) is forced to team up with Minoh (Kenichi Endo), the head of the Gōtotsu-gumi (Kazuhiro Nakahara), to rescue Maki (Koharu Tono), the kidnapped daughter of their boss. Frustrated by the lack of clues, Minoh storms the rival group Okimoto Kōgyō with his underlings. Maki is nowhere to be found, only the mutilated body of the Okimoto chairman remains. Meanwhile, drugs begin to circulate in the Gōtotsu-gumi’s territory, where narcotics are strictly forbidden. Upon uncovering the evil lurking in the shadows, Jin and Minoh charge into a deadly showdown! What is the true motive behind Maki’s abduction? And who will survive the coming storm?

Nathan Algren is an American hired to instruct the Japanese army in the ways of modern warfare, which finds him learning to respect the samurai and the honorable principles that rule them. Pressed to destroy the samurai's way of life in the name of modernization and open trade, Algren decides to become an ultimate warrior himself and to fight for their right to exist.