Tajima is a private detective in charge of his own company, Detective Bureau 2-3. When warring criminal gangs go overboard by robbing U.S. military munitions, Tajima steps in to stop what the cops can't.

在深夜從事武器彈藥交易的桜組和大槻組，被突如其來的數名男子持衝鋒槍所突襲，全軍覆沒。其中真邊公一以嫌疑犯被逮捕，當時從新聞得知此消息的田島英雄，立即趕至立川署警察局。在警局等待真邊被釋放之際，和準備復仇的暴力組織、警方人員有精彩的對手戲，究竟田島是不是一鼓作氣呢？

One day, a lone horseman rides into town with a wounded man strapped behind him. Joe, the Ace, had captured one of the bandits who had held up the armored payroll car headed for the dam construction site, takes the wounded man to the police and claims the reward offered. He is told to wait until the driver of the armored car returns to identify the bandit and goes over to the Blue Star where he is introduced to Mishima, the owner of the cabaret, who is highly respected in the town. Joe then meets Saburo, while fishing, and his lovely sister, who seem to sense the real man beneath the rough appearance and take him into their home. Word reaches Joe that the bandit he'd captured had been shot and he hurries over to the hospital.

Nakata (Keiichiro Akagi) is a nihilistic young buck who is willing to do anything to get money in his pockets. As he knocks back a couple drinks that he knows he won't be able to afford, a former marksman-turned-bad, Ishioka approaches him. Ishioka is looking for an unaffiliated hit-man who is willing to handle some business. Nakata is just the right man for the job.

Ayako (Sayuri Yoshinaga) is a free-willed college girl who shares a room with Takako and Kimie. They each have a clear vision of what they want from their career and love life. Soon, their room share takes a turn, when ideals begin to clash with reality.