Series · 2025

Undercover High School

★ 8.0Action & AdventureComedyDrama

1 season12 episodesEnded

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.

Now watchingThe Emperor's Lost Gold

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Top cast

Seo Kang-joon · Jeong Hae-sungJin Ki-joo · Oh Su-ahKim Shin-rock · Seo Myung-juKim Min-ju · Lee Ye-naYoon Ga-i · Park Mi-jungKim Young-ah · Im Chung-haLee Hyun So · Han Seung-jaeYun Chae-bin · Yun Chae-rin