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Watching: Undercover High School
8.0•2025-02-21•1 Seasons
Season 1
Episode 9
Episodes
EP 1
The Emperor's Lost Gold
EP 2
Spooky Stories
EP 3
Ghost Story Riddles
EP 4
Joining the Student Council
EP 5
Student Council
EP 6
Hye Seong's Father's Notebook
EP 7
The 24th Anniversary of Byeongmun High School
EP 8
The Plan for VIP Students
EP 9
The Mathematics Teacher
EP 10
Retribution
EP 11
The Devastating Truth
EP 12
Where The Stars Lead
Overview
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.