Undercover High School (2025): cast, story & where to watch
2025 · Series · ★ 8
Released in 2025, Undercover High School is an action & adventure, comedy and drama series.
What it’s about. 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.
Who’s in it. Undercover High School stars Seo Kang-joon as Jeong Hae-sung, Jin Ki-joo as Oh Su-ah, Kim Shin-rock as Seo Myung-ju and Kim Min-ju as Lee Ye-na, among others.
How it landed. With an audience score of 8.0/10, Undercover High School sits among the best-reviewed titles in the catalogue.
Where to watch. In US you can stream it on Rakuten Viki, OnDemandKorea, Kocowa Amazon Channel and Kocowa. See the full, country-by-country breakdown on our where to watch Undercover High School page.
If you liked it. Fans of Undercover High School tend to enjoy Rick and Morty, Demon Slayer: Kimetsu no Yaiba, Attack on Titan and Attack on Titan: No Regrets.
Frequently asked
- Where can I watch Undercover High School (2025)?
- In US, Undercover High School is available to stream on Rakuten Viki, OnDemandKorea and Kocowa Amazon Channel. Availability varies by country — check our where-to-watch page for every region.
- Is Undercover High School worth watching?
- Undercover High School holds an audience score of 8.0 out of 10, and is a strong pick if you enjoy action & adventure, comedy and drama. Most viewers rate it highly.
- Who stars in Undercover High School?
- Undercover High School stars Seo Kang-joon, Jin Ki-joo, Kim Shin-rock, Kim Min-ju and Yoon Ga-i.
- When was Undercover High School released?
- Undercover High School was released in 2025.