The Policeman's Lineage

Choi Min-jae, a rookie detective, recently transferred to the Metropolitan Investigation Team, led by Park Gang-yoon. Park is famous for his lavish lifestyle, which a police officer doesn't seem to afford. Gang-yoon takes care of Min-jae as he is the son of the late co-worker, while Min-jae secretly investigates Gang-yoon's corruption by order of Hwang In-ho from the Internal Unit. As the investigation goes, Min-jae finds out the truth about his father and Gang-yoon's past, as well as the more dark secrets residing inside the police society.