“Undercover High School,” starring Seo Kang Jun and Jin Ki Joo is set to air on February 21.
The long wait is finally over! Seo Kang Jun is back in K-dramas after nearly three years! This marks his first drama since completing his military service, and we’re in for a treat because he’s starring in an action-comedy series where he plays an NIS agent who goes undercover as a high school student!
“Undercover High School“
Casts: Seo Kang Jun, Jin Ki Joo, Kim Shin Rock, Kim Min Ju
Synopsis: The story follows Jung Hae Seong, a National Intelligence Service (NIS) agent who gets demoted and is forced to go undercover as a high school student. His mission? To track down the whereabouts of Emperor Gojong’s missing gold bars.
Genre: Action, Comedy, Mystery
Premiere Date: February 21, 2025
Meet the Characters
Seo Kang Jun as Jung Hae Seong
Seo Kang Jun takes on the role of Jung Hae Seong, a top-tier NIS agent from the Domestic Team 4. After a sudden demotion, he finds himself undercover as a high school student to recover state assets worth 800 billion won. But things don’t go as smoothly as planned! While pretending to be a student, he builds unexpected friendships with his classmates and gets tangled in the wild happenings at the school!
Jin Ki Joo as Oh Soo A
Jin Ki Joo will play Oh Soo A, a temporary Korean history teacher at Byeong Moon High School. She’s a bright and warm-hearted educator with a strong sense of justice. She deeply cares about her students and never backs down from a challenge, even when assigned the most bothersome tasks by the vice principal. She forms a special mentor-student bond with Jung Hae Seong along the way!
Kim Shin Rock
Kim Shin Rock steps into the role of Seo Myung Joo, the powerful chairwoman of the Byung Moon Foundation and head of Byeong Moon High School. She’s a meticulous and strategic mastermind obsessed with perfect results, willing to go to any lengths necessary to protect her empire. She is also the archnemesis of Jung Hae Seong.
Kim Min Ju as Lee Ye Na
Kim Min Ju will take on the role of Lee Ye Na, the only daughter of the chairman of the prestigious Byeongmun High School. She’s the definition of a model student—the student council president, a top performer in competitions, and always comes first on the popularity poll. However, despite all her achievements, she struggles to gain the approval of her mother, Seo Myung Joo, the head of the school.
Why Watch “Undercover High School”?
From The Same Writer of “Bad Prosecutor“
If you loved Doh Kyung Soo’s “Bad Prosecutor,” then this drama is definitely for you! “Undercover High School” is written by Lim Young Bin, the same writer behind “Bad Prosecutor,” so expect an action-packed, laugh-out-loud comedy filled with unique character quirks and thrilling moments.
An NIS agent Pretending To Be A High School Student
One of the biggest reasons to watch is the hilarious contrast between a seasoned NIS agent and the high school world. We all know how different the mannerisms of a secret agent and a student are, and Seo Kang Jun will show us just how tough it is to act like a teenager when you’re used to taking down criminals. Based on the teasers, his naturally charismatic presence keeps drawing attention, forcing him to make extra effort to blend in!
Of course, it’s not just comedy—since the main character is an NIS agent, we’re also in for some high-intensity action sequences. But that’s not all—other NIS agents have also infiltrated the school, meaning even more hilarious and suspenseful moments as they secretly work together on their top-secret mission. And since this is also a high school drama, expect to see realistic student struggles—from academic pressure and school violence to corruption within the education system.
Starring Talented Actors and Actresses
Another reason to tune in? Jin Ki Joo! She’s one of the most lovable actresses right now, full of charm, and her bright and positive personality will bring warmth to the series. It will also be fun to see her playfully bicker with Jung Hae Seong, who’s technically the same age as her but pretending to be her student! Meanwhile, Kim Shin Rok is perfectly suited for the cold and calculating antagonist, and we’re excited to see her bring this powerful character to life.
Where To Watch?
Now, the big question remains: Can Hae Seong successfully recover the missing state assets without blowing his cover? Let’s find out together! Be sure to add this to your K-drama watchlist and catch it on KOCOWA+ with multiple subtitles!
All images credited MBC
