Keisuke Tata, a police officer who works at the police station, is a serious and reliable person who works at the police station in a shopping street, but Tatara has a past and a face behind it that no one knows... That is the "liar K" who picks on the object that cannot be punished by the law! In the past, Duoliang was a criminal police officer in the Second Search Division, responsible for chasing down a large fraudster. Why did he, as a police officer, wear the mask of a liar? What is the past hidden behind that? Transcending the law, deceiving bad people, and even deceiving the policemen who become their own family, the real purpose of Duoliang is...