Undercover High School

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Undercover High School
2025 1h 10m ⭐ 8 / 10 Ended MBC
Action & AdventureComedyDrama

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.