Series — 2025
Undercover High School (2025)
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.
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A high-signal pick with 67 votes.
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Not started yet on this device — 13 episodes listed across seasons
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Episodes
S1 · 0/12 watchedDirector: Choi Jeong-in
On screen
Cast & crew
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
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