Secret Royal Inspector Secret Royal Agent: The Joseon Secret Investigation Team (2020)

Towards the end of the Joseon era, Seong I Gyeom (Kim Myung Soo) came top in the state examination and now works at the Hongmungwan (an administrative and research department). He has no particular goal or ambition in life. One day, Seong I Gyeom is caught gambling. As punishment, he is assigned to work as a secret royal inspector*. His task is to root out illegal activities and corruption amongst public officials. He carries out his new role with the help of Hong Da In (Kwon Na Ra) and Park Chun Sam (Lee Yi Kyung). Hong Da In is a female inspector who works undercover as a beautiful and vivacious gisaeng and solves cases alongside Seong I Gyeom. Park Chun Sam is Seong I Gyeom’s servant. Park Chun Sam is talkative, affectionate and whiny, but he is very shrewd. Seong I Beom (Lee Tae Hwan) is Seong I Gyeom’s younger half-brother. His father is a nobleman, but his mother is a slave. Because of his mother’s low social status, his father does not accept him as his true son, and he is denied certain opportunities. He is at odds with Seong I Gyeom.