![Watch: Jin Ki Joo Grows Suspicious Of Seo Kang Joon's Identity In New Teaser For “Undercover High School”](https://6.soompi.io/wp-content/uploads/image/20250206045612_undercover-high-school-teaser.png?s=900x600&e=t)
Watch: Jin Ki Joo Grows Suspicious Of Seo Kang Joon'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 Joon and Jin Ki Joo!
“Undercover High School” is a comedy action drama that follows Jung Hae Sung (Seo Kang Joon), 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 Jung Hae Sung’s homeroom teacher.
In the newly released teaser, Hae Sung makes his entrance, introducing himself with a cool, “I’m Jung Hae Sung. 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 Sung, “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 Sung’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 Jung Hae Sung 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 Joon in “I’ll Go to You When the Weather is Nice”:
Also catch Jin Ki Joo in “My Perfect Stranger”:
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