MBC’s upcoming drama *Undercover High School* has unveiled a sneak peek at the intriguing chemistry between its lead actors, Seo Kang Joon and Jin Ki Joo! This action-comedy series follows Jung Hae Sung (Seo Kang Joon), an agent from the National Intelligence Service (NIS) who disguises himself as a high school student to recover the lost gold of Emperor Gojong. Jin Ki Joo takes on the role of Oh Soo Ah, a temporary Korean history teacher who also happens to be Hae Sung’s homeroom teacher. In the newly revealed teaser, Hae Sung confidently introduces himself, saying, “I’m Jung Hae Sung. I recently transferred to this school.” However, Soo Ah’s stunned expression hints that they may have met before. Their encounters are filled with awkwardness, witty exchanges, and a growing sense of curiosity, suggesting there’s more to their connection than just a teacher-student relationship. A voiceover in the teaser heightens the suspense, warning, “What if you get caught by the teacher?” This foreshadows a possible revelation of Hae Sung’s true identity, setting the stage for an entertaining yet high-stakes dynamic between the two characters. As the story unfolds, audiences can look forward to an exciting blend of action, humor, and tension as Jung Hae Sung’s secret mission becomes increasingly complicated by his interactions with Oh Soo Ah.

Don’t miss the full teaser below!