Title：Undercover High School Year：2025 Rated：TV-14 Genre：Action / Comedy / Thriller Language：Korean Country：South Korea Director：Choi Jung-In Writer：Im Young Bin Actors：Seo Kang-joon / Jin Ki-joo / Kim Min-ju / Kim Shin-rock / Yun Chae-bin / Jeon Bae-soo / Jo Bok-rae / Park Jin-woo / Kim Young-ah / Park Se-hyun / Yoon Ga-yi / Lee Seo-hwan / Lee Min-ji / Shin Joon-hang / Lee Hyun-so / Oh Yong / Yu Ji-wan / Joo Suk-tae / Seo-young Lee Plot：Ace NIS agent Jung Hae-seong is demoted after a mission failure. He goes undercover at a high school to locate King Gojong's missing gold, meeting his teacher Oh Soo-ah, who sees him as her lost first love, stirring old heartbreak.
