Undercover High School

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

Top Cast

Seo Kang-joon

Character: Jeong Hae-sung

Jin Ki-joo

Character: Oh Su-ah

Kim Shin-rock

Character: Seo Myung-ju

Kim Min-ju

Character: Lee Ye-na

Yoon Ga-i

Character: Park Mi-jung

Kim Young-ah

Character: Im Chung-ha

Lee Hyun So

Character: Han Seung-jae

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