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.

Undercover High School (2025)

★ 8/10 February 21, 2025 1 season

Action & AdventureComedyDrama

Creator: Im Young-bin, Choi Jeong-in  ·  Writer: Im Young-bin

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.

Where to watch

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Trailer

Creators

Im Young-bin Choi Jeong-in

Cast

Seo Kang-joon Jeong Hae-sung Jin Ki-joo Oh Su-ah Kim Shin-rock Seo Myung-ju Kim Min-ju Lee Ye-na Yoon Ga-i Park Mi-jung Kim Young-ah Im Chung-ha Lee Hyun So Han Seung-jae Yun Chae-bin Yun Chae-rin Kim Sun-min Ji Hyeon-jun Kim Seung-beom Kim Ho-jin Kang Pil-jun Son Beom-Sik