Misuzu Rinka, a beautiful female lawyer who works in Roppongi, has signed an advisory contract with a major company that has annual sales of 10 billion yen. She's had a smooth sailing life as a lawyer. However, one day, her father who is also a lawyer, Misuzu Hanataro, disappears. Ushijima Renji, who works at her father's firm, contacts Rinka. Her father left a note saying that he would be giving the firm to Rinka. Rinka, who hates her father, is approached by hostess Rio who is complaining of a stalker. Rinka feels she has no choice but to take up this case and finds herself bewildered by the differences between Kabukicho and Roppongi as she investigates cases.

Rinka is dismissed from her Roppongi law firm and has no choice but to work at her father's law firm. Yuri comes from a consultation and tells Rinka that she has a mistress contract with Gonba, the president of a real estate company and a regular customer. Yuri was forced into this situation due to her mounting debt but the mistress contract is not considered illegal and Rinka is at a loss...

Rinka reunites with Yamada Ran, a junior lawyer from the Roppongi law firm she used to work at. Rinka is approached by Sawai Junko, an OL that works for a major entertainment company and says she was sexually harassed. Junko was once tricked into appearing in AV and it became known to section chief Inohara who threatened her in turn. Rinka embarks on her investigation and tries to get Junko's colleagues to gather evidence. However, they refuse and Rinka goes to the company only to find that the corporate lawyer for the company is Ran.

Rinka is unable to prove the sexual harassment for Junko when she wanted to sue her company. In return for her efforts, Junko's AV video is spread around. As Rinka considers her options, Junko cancels her defense request. Being unable to help her and pushing her into a worse situation, Rinka is disappointed. However, due to her own sense of justice and with the support of her colleague Ushijima, she continues investigating.

While Rinka receives a massage at her favorite beauty salon, an urgent call comes from the Misuzu Law Firm clerk Ushijima Renji. When she hurries back, she finds that her junior lawyer, Ran, wants to work at Misuzu Law Firm. Meanwhile Kabukicho host Takeshi and others arrive. Senior host, Yuji, was arrested on suspicion of killing a hostess. However, he denies it and there is a possibility of false accusation. Takeshi and his friends begs Rinka to accept their defense request. Within the police detention of 48 hours, Rinka investigates the case and finds a suspecious 2 hours missing. Also, there is an eyewitness...

Rinka was attacked by a thug at her law firm. Rinka is busy working on the case of Yuji and has an increasing suspicion that the eyewitness, the president of a famous IT company, Iijima Takashi, may be the true criminal and gets a hint from the thug that Iijima may have been involved. Subsequent investigation reveals that Iijima has a black past. However, there's no evidence...