Married woman undercover investigator - I prefecture Y city adult entertainment building investigation edition -

Violations of the Firearms and Swords Act, the Entertainment Business Act, and the Drug Control Act... In order to uncover crimes, Nana and her husband, who is also her partner, infiltrate a certain entertainment building. However, at that moment when the mastermind escapes, a bullet fired by a prostitute hits her and her husband is killed in the line of duty. Although Nana is reprimanded by her boss to back off, she disguises herself as a prostitute and begins an undercover investigation again, gradually getting closer to the mastermind. But Nana didn't know it at the time. That a huge organization is involved in the incident...