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 brothel building. However, at the moment when her mastermind escaped and was dismayed, the bullet fired by her prostitute hit her and her husband died in the line of duty. Nana was reprimanded by her boss to withdraw her hand, but Nana disguised herself as a prostitute and started an undercover investigation again, gradually approaching the mastermind. But she didn't know Nana yet. She realizes that a very large organization is involved in the incident...
