Kwang Su (Shin Hyun Jun) has struggled his whole life to shake off the stigma of a shameful family history. He lives in a state of perpetual despair. By contrast, Jong Man (Lee Byung Hun) works as a bartender and spends his days dreaming of becoming an international movie star and his nights filming himself and contacting top Hollywood production companies in the hope that one day he will get his lucky break. Then there is the shy girl Se Hee who works in a music store. When Kwang Su stumbles into the music store, blind drunk, but still able to bash out a tune on a piano, Se Hee falls instantly in love. When Kwang Su stumbles into the bar where Jong Man works, he finds himself arrested for his brother's murder. But fortunately he manages to escape from the police, bumps into Jong Man who instantly lets him stay in his apartment.

1st film of the 任侠哀歌 series. Kurosaki Ken (Namioka Kazuki), the son of Saijo Fund executive Kurosaki Hiroshi (Akai Hidekazu), gets caught up in a dispute between the Sagawa and Kawashima groups, both of which are affiliated with the yakuza organization Kiryu-kai, and is captured by the Sagawa gang along with his friends Ando Tatsuya (Kitadai Takashi) and Hanamaki Daisuke (Isaka Tatsuya). Just as they are about to be killed, Ken's father Hiroshi saves the three. After being persuaded by Hiroshi, the three swear to reform, but Tatsuya is tricked by Mikitani of the Kawashima gang and is nearly killed. Ken accidentally shoots Mikitani while trying to stop him, and is arrested and sentenced to 5 years for attempted murder. While in custody, his father appears to commits suicide and Ken becomes consumed with guilt and doubts about the veracity of his father's murder. Five years later, Ken is released, and begins to look for answers ...

2nd film in the '任侠哀歌' trilogy. Kurosaki Ken (Namioka Kazuki) burns with a desire for revenge after his father was killed by the Kiryu-kai. With Ken's declaration, Mikitani's scheme became public and the Kiryu Clan disown him. In order to split the Kiryu Clan and set his revenge in motion, Ken first assassinates Kawashima (Fujiwara Yoshiaki). Mikitani mistakenly believed that Kawashima's assassination was the work of Sagawa (Motomiya Yasukaze), and hid from the Kiryu Clan with aims to capture Sagawa. However, Sagawa saw through Ken's scheme and instead uses Mikitani in an attempt to kill him. Just as Ken was planning his next move, a man arrives at his hideout: Ando Tatsuya (Kitadai Takashi), Kurosaki's best friend, and the one whose crimes Ken went down for five years ago ...

Final film in the '任侠哀歌' trilogy. Kurosaki Ken (Namioka Kazuki) has now lost both parents to the machinations of the Kiryu Clan and his fire for vengeance hits its peak. However, the chairman of the Kiryu Clan, Kijima (Watanabe Hiroyuki), is revealed to have been both a close friend of Ken's father Hiroshi ... and Ken's own biological father. Kijima challenges Ken to a one-on-one duel and allow his son an honourable vengeance, but the Kiryu Clan's captain, Sagawa (Motomiya Yasukaze) interferes to protect Chairman Kijima and shoots Ken in the leg, ending the fight in a draw. Unable to move and but needing to further his plan to dismantle the Kiryu Clan, Ken beseeches his friend Daisuke (Isaka Tatsuya) to visit a certain person: Ishibashi (Sugata Shun), a detective who had been circling around the wild Sagawa. Realising their goals are aligned, Ishibashi shares a vital secret that may finally end Sagawa's rampant violence ...

Explores the background of the character Winter, while intersecting events from three entries into the series.