Miura Aya (Aso Yumi) is a detective who has always fought cases on the front line and worked her way up. Hojo Yuriko (Natori Yuko) is an elite police officer in HR who has always done office work in the Tokyo Metropolitan Police Department. They are complete opposites in their values and fields of expertise. Then Yuriko gets an unusual transfer from the Tokyo Metropolitan Police Department to the Kanagawa Prefectural Police. What special mission has she been charged with?