is a 1974 Japanese yakuza film directed by Kinji Fukasaku. It begins a new series of films with unrelated plots, based on the director's earlier Battles Without Honor and Humanity pentalogy. New Battles Without Honor and Humanity: The Boss's Head followed in 1975 and New Battles Without Honor and Humanity: Last Days of the Boss in 1976.
Plot
In 1950, Makio Miyoshi, a member of the Yamamori Family, attempts to assassinate the boss of the rival Asada Family in public, but flees before finishing the job. That evening, he meets with his boss, Yoshio Yamamori, who berates him for his failure. Two other Yamamori Family members, lieutenant Naotake Aoki and senior officer Shigeru Nanba, arrive to collect Yamamori and provide Makio with a clean gun to kill Boss Asada. Makio then allows himself to be arrested for his crime and is sentenced to eight years in prison.
Nine years later, Makio is visited by both Yamamori and Aoki and learns that the family is divided, with Yamamori claiming that Aoki is jealous of his success and wants to seize power for himself, and Aoki countering the boss's accusations by revealing that Yamamori forced himself on his girlfriend while he was serving time several years earlier and arguing that he is too old and useless to lead the family. Makio makes parole and Yamamori instructs his nephew Kenji to provide Makio with a room and a monthly salary, and sends several yakuza, including Makio's childhood friend Noburo Kitami, to protect him. Makio correctly suspects that all of these gifts are intended to win his favor. When the whole family visits to celebrate Makio's release, Yamamori and his wife resort to bribing Makio to kill Aoki, but he refuses, stating that Aoki is his blood brother and he will not harm him.
However, news then arrives from Kure that Aoki's men have assassinated Nanba, allowing Aoki to take his place as blood brother to Hiroshima boss Unokichi Kaizu. Aoki also intends to have Nanba's subordinate Masuo Nozaki, who is loyal to him, succeed Nanba against the wishes of many Nanba Family members, who instead turn to Makio's old cellmate, Masaru Seki. Makio, accompanied by his girlfriend Keiko, visits Aoki to assess the situation. Aoki's wife convinces Keiko that Makio plans to kill her husband, and they have a violent argument that ends with Keiko scarring Makio with a knife and leaving him. Aoki himself asks Makio to leave the family; when he refuses, he arranges for a hitman to kill Makio while he's distracted by a prostitute. Makio escapes with his life, and convinces Aoki to give him money so he can travel to Shikoku and swear loyalty to another family, implying that he no longer cares what happens to Yamamori.
An emboldened Aoki moves against his enemies, humiliating Yamamori and forcing him to dissolve his family, and having Nozaki order a hit on Seki, who winds up hospitalized with severe injuries. Yamamori persuades one of his former family members, Gen Sakagami, to approach Makio with a plan to assassinate Aoki with the help of Seki's loyal crew. Makio agrees to break off his blood oath with Aoki, thus ending his obligation to protect him, but refuses to help otherwise. The hit, scheduled to take place during a ceremony to name Nozaki as Nanba's successor, fails when the police suddenly arrive to take Nozaki into custody for attacking Seki. The crew loses their nerve and force Gen to promise that Makio will kill Aoki instead.
Enraged, Makio concocts a new plan. He has Kitami visit Seki's men to intimidate them into taking action, tells Gen that he will be responsible for setting a trap for Aoki, and offers his finger to Kaizu in return for a promise that his family will not interfere. The next morning, Aoki sits down to a meal with Gen before assassins shoot up the restaurant; his bodyguards fight them off while a badly wounded Aoki tries to run. Seki, having left the hospital in secret, confronts a dying Aoki and shoots him, which Kitami witnesses and reports to Makio. Yamamori celebrates his return to power, and promotes Makio for his loyal service. The film ends by stating that Makio went on to play a key role in a major gang war that broke out in 1963.