Undercover High School S01 (Episode 1-2 Added) | Korean Drama

Undercover High School

A comedic action drama about an elite NIS agent who goes undercover as a high school student to track down the lost gold of Emperor Gojong.

Byungmoon, Korea’s most prestigious private high school, is steeped in corruption, where power and status rule. Hae-sung, a top-tier NIS agent, infiltrates the school to locate the hidden treasure and uncover the truth behind his father’s disappearance. Cold and methodical, he sees his mission as purely strategic—until unexpected friendships and a reunion with an old crush complicate things.

As he becomes an unlikely hero to the students, Hae-sung finds himself torn between duty and the bonds he never intended to form. Will he stay focused on his mission, or will the school change him in ways he never saw coming?