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IMDbPro

Eondeokeobeo Haiseukul

  • TV Series
  • 2025–
  • TV-14
  • 1h 10m
IMDb RATING
7.8/10
2.9K
YOUR RATING
POPULARITY
2,216
4
Seo Kang-joon in Eondeokeobeo Haiseukul (2025)
Undercover High School Teaser
Play trailer0:44
1 Video
42 Photos
ActionComedyThriller

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 ... Read allAce 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.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.

  • Stars
    • Seo Kang-joon
    • Jin Ki-joo
    • Kim Min-ju
  • See production info at IMDbPro
  • IMDb RATING
    7.8/10
    2.9K
    YOUR RATING
    POPULARITY
    2,216
    4
    • Stars
      • Seo Kang-joon
      • Jin Ki-joo
      • Kim Min-ju
    • 29User reviews
    • 3Critic reviews
  • See production info at IMDbPro
  • Episodes12

    Browse episodes
    TopTop-rated1 season2025

    Videos1

    Undercover High School Teaser
    Trailer 0:44
    Undercover High School Teaser

    Photos41

    View Poster
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    + 38
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    Top cast16

    Edit
    Seo Kang-joon
    Seo Kang-joon
    • Jeong Hae-seong
    • 2025
    Jin Ki-joo
    Jin Ki-joo
    • Oh Soo-ah
    • 2025
    Kim Min-ju
    • Lee Ye-na
    • 2025
    Kim Shin-rock
    Kim Shin-rock
    • Seo Myeong-joo
    • 2025
    Lee Seo-hwan
    Lee Seo-hwan
    • Kim Hyeong-bae
    • 2025
    Park Jin-woo
    • Park Jae-moon
    • 2025
    Jeon Bae-soo
    Jeon Bae-soo
    • Ahn Seok-ho
    • 2025
    Kim Young-ah
    Kim Young-ah
    • Soo-ah's Mother
    • 2025
    Park Se-hyun
    Park Se-hyun
    • Ahn Yoo-jeong
    • 2025
    Jo Bok-rae
    Jo Bok-rae
    • Go Young-hoon
    • 2025
    Lee Min-ji
    • Kim Ri-an
    • 2025
    Yoon Ga-yi
    • Park Mi-jeong
    • 2025
    Shin Joon-hang
    • Lee Dong-min
    • 2025
    Lee Hyun-so
    • Han Seung-jae
    • 2025
    Oh Yong
    • Head teacher
    • 2025
    Seo-young Lee
    • Park Minji
    • 2025
    • All cast & crew
    • Production, box office & more at IMDbPro

    User reviews29

    7.82.8K
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    Featured reviews

    8PennyReviews

    Good Enough

    Korean Drama '' Undercover High School '' is a school mystery thriller with a strong comedic element.

    The story is not that original, but the mystery is, and the comedy part was well handled, with enough funny scenes to lighten the mood. The mystery was also intriguing, it was well paced, and had smooth twists.

    The romance, on the other hand, could have been omitted, as it didn't really add anything to the plot, and was half baked in the end, as the drama opted to focus more on the mystery, thankfully, and not on the love story.

    Finally, the performances were all great by everyone in the cast.

    So, overall, eight out of ten.
    10sunyya

    loving, living, and laughing this show & seo kang joon fr <333

    I'm so so sad that this show is j 12 eps, it deserves 20 eps. I finished this show a week ago and i already have the urge to rewatch it again.

    The story line, the dialogues and delivering chaotic energy in such a non-cringe and natural way i loveeed it istg. So so so good. I love chaotic shows and the element of the NIS agent to this show j makes it sm hotter for me alr istg.

    I had actually never heard of seo kang joon before, but brothers and sisters i am already obessed w this man. He is so underrated i don't get why. His acting is so so so natural loved it. His character was so manly but pookie which is absolutely loved. What i love the most is eyes istg. The most beautiful eyes i have ever seen on a man to date, im not even kidding.

    Jin ki joo, i love her too. Her character was so cute, i wanted to keep her in my pocket literally. Even she herself as an actress phenomenal and again so underrated.

    The chemistry between jeong hae-seong and oh su-a was insane. Believe me when i tell you even their hands had chemistry.

    Love this show, lowkey wanna lose all my memories and watch this masterpiece again.
    asia_0

    Fun and emotional adventure!

    It's been a while since a series hooked me this much. I've been eagerly waiting each week for new episodes and didn't feel disappointed even once.

    Great blend of different genres - action, adventure, comedy, romance and all of them so well written. Jin Ki-joo and Seo Kang-joon truly brought their characters to life and their chemistry is of the charts.

    There is many kdrama cliches in the story which I often find bothersome but they are so well introduced that felt very natural.

    The main story is fast paced and I wish there was more time to dive into some dinamics between characters or side stories but I guess it was impossible with 12 ep.

    Overall a must watch!
    10asmrsatisfyingslimebest

    BEST KDRAMA OF 2025 (MUST MUST WATCH)

    I just finished the 8th episode so far its so good cant wait for the next episode. It keeps on getting better the twist and the story is really amazing, when you see a episode you are soo thrilled to watch the next episode you cant wait. Thats how this drama is. I wish this drama wins the best drama of 2025, the main lead in this drama and his acting is AMAZING he is soo good, this is the first time i see his drama and i must say i am amazed. Also the female lead is also really good. Those who chose the actors i must say they are really good. The cast, cinematography, direction, story and action was all amazing, i loved itt.

    THE SUMMARY OF UNDERCOVER HIGH SCHOOL

    Jeong Hae-seong, an NIS agent who was demoted after a major incident that occurred during an operation, and later he is tasked with a special mission of tracking down the whereabouts of Emperor Gojong's missing gold bars. Hae-seong hides his identity, goes undercover as a high school student at Byeongmun High School, and meets Oh Su-a, his homeroom teacher. Su-a, a devoted teacher to her students, begins to notice the similarities between Hae-seong and her childhood first love, who left her heartbroken and filled with painful memories.

    GENRE - Action, comedy, spy

    OVARALL REVIEW- A must must watch kdrama, wont regret watching it.
    8hironaka-16974

    A Salad of themes but fun to watch

    Action, thriller, comedy, romance, mistery, high school bullying, everything in there but written with competency and beeing serious about bullying. The series is about golden bars hidden in the high school and the NIS agent (Seo Kang Joo) had to find them going undercover as a student. His teacher (Jin Ki Joo in a hilarious excelent performance) mistrust him and try to unmask him causing very funny consequences. There are three NIS agents who support Seo Kang Joo who make his mission not so easy. The villain in the series is the Principal (Kim Shin Rok who is become specialized in villain character) That is a very entertaining series and recomend it.

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    Storyline

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    Did you know

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    • Trivia
      First acting role for lead male actor Seo Kang-Joon since he completed his compulsory military service on May 22, 2023.

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    Details

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    • Release date
      • February 21, 2025 (South Korea)
    • Country of origin
      • South Korea
    • Official sites
      • Kocowa (United States)
      • Naver (South Korea)
    • Language
      • Korean
    • Also known as
      • Undercover High School
    • Production companies
      • Neo Entertainment
      • Slingshot Studio
    • See more company credits at IMDbPro

    Tech specs

    Edit
    • Runtime
      1 hour 10 minutes
    • Color
      • Color

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