Trailer | Undercover High School
Release date : 28 february 2025
—SYNOPSIS
Jung Hae-Seong (Seo Kang-Joon) is a mainstay field agent for the National Intelligence Service (NIS). After a major incident occurs during an operation, Jung Hae-Seong is demoted. He was placed in an operation to find the whereabouts of King Gojong’s missing gold bars. For this assignment, he hides his identity and disguises himself as a student at the prestigious Byeongmoon High School. There, he meets Teacher Oh Soo-A (Jin Ki-Joo) as his homeroom teacher.
Oh Soo-A is a Korean history contract teacher with an honest personality and she has strong affection towards her students. One day, Jung Hae-Seong transferred to Byeongmoon High School and he became his homeroom teacher. She begins to see her first love, from her childhood, overlapping in Jung Hae-Seong. First love causes the biggest wound in the heart.