Masao is falsely accused and jailed for the murder of a loanshark to whom he owed a lot of money. His sister Kiriko makes the long trip to Tokyo, specifically to accost Otsuka, Japan's top criminal defence lawyer, and plead with him to take her brother's case. They live in Kitakyushu which, though a city, she contends that the local lawyers are not up to the job. Otsuka contemptuously brushes her off. A year passes. Masao has suicided in jail, his appeal having failed due to the lack of interest and competence of the local defence lawyer. Kiriko returns to Tokyo, planning revenge on Otsuka for refusing the case and causing her brother's death.

When her only relative, her elder brother is accused of robbing and murdering an old woman loan-shark, pretty, young Kiriko travels from her home in Kyushu to Tokyo to get Japan's top lawyer to defend her brother. Unfortunately her naive idealism is shattered when the lawyer refuses to take the case based on her insufficient funds. What follows is a long determined revenge plot that sees the heroine become a Tokyo bar hostess and worse to punish the lawyer. The plot thickens with another murder mystery and a sleuthing reporter.

A young, mentally retarded boy is wrongfully accused of murder, but his family lacks the means to hire an attorney to defend him. The boy’s sister, Kiriko, pleads with an accomplished attorney named Otsuka to defend her brother pro bono. But because of Otsuka’s busy schedule and other priorities, he refuses to take the case. Lacking a proper defense, Kiriko’s brother is eventually convicted of murder, and dies in prison. From that point on, Kiriko is determined to take revenge against Otuska.

The prominent lawyer Kinya Ohtsuka looks over the case of the falsely indicted man who was sentenced to life imprisonment and then committed suicide while incarcerated. One year ago, the prominent lawyer rebuffed the efforts of Kiriko Yanagida to represent her brother. Kiriko Yanagida now works as a hostess in Tokyo while planning revenge on those responsible for her brother's imprisonment.