"The Master's Biao" is a hilarious political TV series about a one-year contract district councillor, Gu Se-ra (Lim Jin-na), and a demoted elite affairs officer, Seo Kong-myeong (Park Sung-hoon), who work together to punish politicians with bad behavior. Park Sung-hoon will play the fifth-level affairs officer, Seo Kong-myeong, who is a top-notch male civil servant in the district office. He is capable of fighting a hundred people with his calm and straightforward personality, which is as ruthless as a knife, so he is better at making enemies than his colleagues. Lim Jin-na plays Gu Se-ra, who becomes a contract district councillor for an annual salary of 50 million. He has no money and no background, but is very good at pretending. He enters politics with the political ambition to change the world.