
Undercover High School is an upcoming South Korean television series that mixes action, comedy, and high school life, starring Seo Kang-joon, Jin Ki-joo, and Kim Shin-rok. The show follows the thrilling and humorous journey of an NIS agent who is forced to go undercover as a high school student. It is set to premiere on MBC TV on February 21, 2025, airing every Friday and Saturday at 9:50 PM KST.
Synopsis
The story revolves around Jung Hae-sung (played by Seo Kang-joon), an NIS agent who faces a demotion after a major incident during a mission. However, he is given a new top-secret task: to track down the missing gold bars of Emperor Gojong. To carry out this mission, Hae-sung must hide his true identity and go undercover at Byeongmun High School, posing as a high school student.
Once at the school, he meets Oh Soo-ah (played by Jin Ki-joo), a dedicated Korean history teacher who begins to notice striking similarities between Hae-sung and her first love from her childhood—a love that left her heartbroken and filled with painful memories.
As Hae-sung navigates the complexities of teenage life while trying to complete his mission, he also finds himself caught up in a growing connection with Soo-ah, blurring the lines between duty and personal emotions.
Main Cast
Seo Kang-joon as Jung Hae-sung: The NIS agent tasked with going undercover as a high school student. His cool demeanor hides a man deeply involved in espionage, yet he’s forced to adapt to the teenage world to fulfill his mission.
Jin Ki-joo as Oh Soo-ah: A caring and devoted history teacher at Byeongmun High School, who is drawn to Hae-sung and starts to uncover his mysterious side while also struggling with the memories of her past.
Kim Shin-rok as Seo Myung-joo: The powerful chairman of the Byeongmun Foundation and the prestigious Byeongmun High School. Myung-joo’s role will likely influence the high school’s inner workings and Hae-sung’s mission.
Supporting Cast
Kim Min-ju as Lee Ye-na: The daughter of the chairman and president of the student council, she is a top student, arrogant and highly competitive, which adds another layer of tension in the high school environment.
Yoon Ga-i as an NIS agent: Likely to play an important role in Hae-sung’s mission or provide support from behind the scenes.
Production and Development
Undercover High School is written by Im Young-bin and directed by Choi Jung-in. The show is produced by Neo Entertainment and Slingshot Studios, with MBC planning to air the series in February 2025. This series promises to be a unique mix of espionage action and comedic moments tied to high school life, making it a fresh take on both genres.
Release
The series will premiere on MBC TV on February 21, 2025, and will be available for streaming on Wavve in Korea, with international availability on Viu in selected regions, such as Indonesia.
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