Undercover High School Episodes 1 & 2!
In the world of K-dramas, where high school romances and spy thrillers often exist in separate universes, “Undercover High School” dares to blend these genres into a captivating narrative. The series, which premiered on MBC on February 21 and 22, 2025, introduces us to a world where national secrets, lost treasures, and teenage drama collide in the most unexpected ways.
Starring the charismatic Seo Kang-joon as Jeong Hae-seong, an NIS agent masquerading as a high school student, and Jin Ki-joo as Oh Su-ah, a history teacher with her own emotional baggage, “Undercover High School” promises a rollercoaster of emotions, suspense, and perhaps a dash of forbidden romance.

As we dive into the recap of episodes 1 and 2, prepare yourself for a story that’s as layered as it is entertaining. From hidden gold to high school bullies, from undercover missions to unexpected connections, this drama sets the stage for what could be the most thrilling high school experience you’ve never had.
Table of Contents
Undercover High School Episode 1: The Mission Begins
Jeong Hae-seong’s journey into the world of high school espionage kicks off with a bang – or rather, with a broken Buddha statue. This mishap leads to his demotion and subsequent undercover assignment: find King Gojong’s missing gold bars, worth a staggering 800 million KRW, rumored to be hidden within the school grounds.
Meanwhile, Oh Su-ah’s attempts to secure a full-time teaching position take a comical turn when she accidentally snatches the vice principal’s wig during his birthday celebration. Talk about making a lasting impression!
The paths of our protagonists first cross in an unexpected setting – Oh Su-ah’s mother’s restaurant. In a scene that blends tension with heroism, Jeong Hae-seong intervenes when Oh Su-ah faces harassment from underage drinkers. Little does she know, her knight in shining armor is about to become her student.
The episode culminates with Jeong Hae-seong’s first attempt to investigate the school’s mysterious old building, only to be thwarted by a vigilant Oh Su-ah. The question lingers: How long can he maintain his cover?
Episode 2: Secrets and Suspicions
As news of the intruder spreads, the school becomes a hotbed of speculation and increased security measures. Director Seo Myung-jo’s interest in the incident adds another layer of intrigue to the unfolding mystery.
The drama takes a deeper dive into the complex dynamics of high school life, with Jeong Hae-seong navigating the treacherous waters of teenage politics. His intervention in a bullying incident involving Lee Dong-min and the aggressive Park Tae-su showcases the moral dilemmas faced by our undercover agent.
Oh Su-ah’s growing suspicions about Jeong Hae-seong’s true identity add tension to their every interaction. Her attempts to uncover the truth are both endearing and potentially dangerous for our protagonist’s mission.
The episode takes a dark turn with the revelation of a chilling urban legend about a student’s suicide in the old building. This, coupled with Park Tae-su’s sinister dealings and the discovery of a skeleton in the ballet classroom, sets a tone of genuine mystery and danger.
The climax of episode 2 delivers a double shock: Jeong Hae-seong discovers that Director Seo Myung-jo is also searching for the gold, while simultaneously being caught on her hidden camera. With Lee Dong-min unwittingly involved, the stakes have never been higher.
The Verdict: A Promising Start
“Undercover High School” has laid the groundwork for a series that promises to keep viewers on the edge of their seats. With its blend of high-stakes espionage, teenage drama, and historical mystery, the show offers something for every type of K-drama fan.
Seo Kang-joon’s portrayal of Jeong Hae-seong strikes a perfect balance between the competent agent and the fish-out-of-water high school student. Jin Ki-joo brings depth to Oh Su-ah, a character caught between her professional aspirations and her growing suspicions about her enigmatic new student.
As the series progresses, viewers can look forward to unraveling the mystery of King Gojong’s gold, the true nature of the old building’s dark history, and the potential for a complicated relationship between Jeong Hae-seong and Oh Su-ah.
With its intriguing premise and strong opening episodes, “Undercover High School” is shaping up to be must-watch television. Tune in every Friday and Saturday on MBC to see how this thrilling tale unfolds.
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Frequently Asked Questions
Q1: Is “Undercover High School” based on a true story?
No, “Undercover High School” is a fictional drama. However, it cleverly incorporates historical elements, such as King Gojong’s missing gold, to create a compelling narrative that blends fact and fiction.
Q2: How many episodes will “Undercover High School” have?
While the exact number of episodes hasn’t been officially announced, most Korean dramas typically run for 16 to 20 episodes. Stay tuned to MBC’s official channels for updates on the series schedule.