Yuri, who belongs to the 6th Division of the Investigative Bureau, which deals with economic crimes and intellectual crimes, is a new investigator with little experience. She applied for an undercover investigation for the first time this time, and she was Yuri, but her undercover organization is rumored to be involved in drug-related cases. Yuri, dressed as a customer of the beauty salon run by the organization, tries to infiltrate alone.
