Miura Aya has been feeling depressed even though she was given a promotion, and assigned from Kanagawa Prefectural Police headquarters to a police precinct as a deputy police chief. However, this is only a job title. In reality, all she has been doing is counter work. Hojo Yuriko retired but has returned as a part-time detective. This odd pair who are like oil and water team up once again. Freed from the constraints of the police organization in their current positions, they run riot.