Isamu Okita is a street mobster who likes fighting. When the Takigawa Gang tried to take over his turf, he initiated a payback killing in a bath-house which led to a stint in prison. When released he discovers that things have changed, and the old gangs no longer have the power they once had. He teams up with Kizaki, an aspiring gangster who suggests to him that he re-unite his old gang and take on the existing gangs for territory. After challenging the Yato Gang in one of their restaurants, the leader recruits Okita's men to his own gang when he is impressed by the way they fight. With the help of Okita, Yato's gang crushes the Takigawa Gang, and an alliance is formed. But it's not to Okita's liking, as things are way too peaceful. All that is shattered when a rival gang leader, Mr Owada from Kobe, appears on the scene to join the alliance, and after a major display of disrespect towards Mr Owada, Okita and his men are banished from the gang. Okita decides to start a guerrilla war between the gangs with deadly consequences for all.