Top Picks
Top Picks
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.
Director
Choi Jeong-in
Cast
Seo Kang-joon, Jin Ki-joo, Kim Shin-rock, Kim Min-ju, Yoon Ga-i, Kim Young-ah, Lee Hyun So, Yun Chae-bin, Kim Sun-min
Undercover High School is streaming on Kocowa. Undercover High School is streaming on Kocowa Amazon Channel. Undercover High School is streaming on OnDemandKorea. Availability last verified February 23, 2026.
All Options
Included with Subscription
Kocowa
Stream • Included
HD
Kocowa Amazon Channel
Stream • Included
HD
OnDemandKorea
Stream • Included
HD
