Undercover High School

8.066 votes on TMDB2025TV Series1h 10m

• Action & Adventure
• Comedy
• Drama

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.