Undercover High School
Created by Choi Jeong-in, Im Young-bin
On MBC
A light-hearted romantic comedy-action hybrid where an undercover agent's high school infiltration collides with genuine emotional reconnection, balancing spy-thriller mechanics with warmth and humor.
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.
Clusters
Where to watch
- StreamRakuten Viki, Kocowa, OnDemandKorea
- AdsRakuten Viki
Questions people ask
Does Undercover High School leave you hopeful? Yes. More hopeful than 81% of series.
Is Undercover High School easy watching? Yes. More comforting than 80% of series.
Is Undercover High School sad? About average. Almost exactly mid-range.
Is Undercover High School scary? About average. Almost exactly mid-range.
Is Undercover High School violent? About average. Almost exactly mid-range.
These describe how the series comes across across its whole run, compared with other well-known series. They are not a content list — nothing here was counted or checked episode by episode, so for age-suitability or specific content use a classification board or a dedicated content-warning service.
Cinnamon Score
How much this series gives you that nothing else will, and whether it delivers.
You have seen this shape before.
How unlike any other series this one feels
How much more it delivers than it promises
How much audiences actually like it
Ensemble
Like Undercover High School
Nearest across the full emotional profile.
Same Mood as Undercover High School
Nearest on what's most distinctive about this one.
Like Undercover High School, But Darker
Similar, pushed toward heavier and more intense.
Like Undercover High School, But Lighter
Similar, pushed toward warmer and easier.
Like Undercover High School, But Less Popular
Same territory, far fewer people have seen it.
