Hye-soo, CEO of a suburban start-up in Mang-jin, endeavors to successfully host the city's emblematic 2nd Yeonsan-gun Cultural Festival but faces persistent unexpected challenges causing the festival to become chaotic.

A secret royal inspector works as an undercover official who inspects local provinces to expose corruption. He teams up with a lady who is searching for happiness by getting divorced with her current husband. The duo then go on a grand scheme to discover the truth and find corruptions.