“Undercover” depicts the story of Han Jung Hyun, who has been hiding his identity for a long time, and Choi Yeon Soo, a human rights lawyer who becomes the first head of the Senior Civil Servant Corruption Investigations Unit to fight for justice. A fierce battle begins to protect love and justice from the huge forces that dominate and shake the country for profit. The drama is expected to dig into the reality of power and closely follow the story of human multifacetedness hidden in it as well as discuss what is right and wrong. First off, Ji Jin Hee’s character Han Jung Hyun is an agent at the Agency for National Security Planning who has been hiding his identity for a long time. He’s known for his extraordinary quickness and boldness, and during his top secret mission, he falls in love with Choi Yeon Soo and eventually marries her. However, his secret life gets caught up in an uncontrollable whirlwind when his wife becomes nominated for a post at the Senior Civil Servant Corruption Investigations Unit. Kim Hyun Joo’s character Choi Yeon Soo is a human rights lawyer who has lived for justice and truth. In recognition of her lifelong beliefs and abilities, she becomes nominated as the first head of the Senior Civil Servant Corruption Investigations Unit. Little does she know that her new position will force her to face a shocking truth.