Watch: Jin Ki Joo Grows Suspicious Of Seo Kang Jun's Identity In New Teaser For “Undercover High School”
MBC’s upcoming drama “Undercover High School” has offered a glimpse into the budding chemistry between its leads, Seo Kang Jun and Jin Ki Joo!
“Undercover High School” is a comedy action drama that follows Jeong Hae Seong (Seo Kang Jun), a National Intelligence Service (NIS) agent who goes undercover as a high school student to track down Emperor Gojong’s missing gold.
Jin Ki Joo stars as Oh Soo Ah, a temporary Korean history teacher and Jeong Hae Seong’s homeroom teacher.
In the newly released teaser, Hae Seong makes his entrance, introducing himself with a cool, “I’m Jeong Hae Seong. I recently transferred to this school.” But the reaction from Soo Ah speaks volumes—her flustered expression suggests the two have crossed paths before. What follows is a mix of awkwardness, banter, and growing suspicion as their interactions begin to hint at more than just a teacher-student dynamic.
A voice echoes through the teaser, warning Hae Seong, “What if you get caught by the teacher?” adding an extra layer of tension to his secret mission. This moment suggests Soo Ah might soon uncover Hae Seong’s true identity, setting the stage for a playful, yet potentially dangerous, clash.
As the story unfolds, viewers can expect a rollercoaster of action, comedy, and tension as Jeong Hae Seong and Oh Soo Ah’s relationship deepens, complicating his covert mission.
Check out the full teaser below!
“Undercover High School” will premiere on February 21 at 9:50 p.m. KST.
In the meantime, watch Seo Kang Jun in “I’ll Go to You When the Weather is Nice”:
Also catch Jin Ki Joo in “My Perfect Stranger”:
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