Undercover High School

Undercover High School plunges Jung Hae Sung, an elite NIS field agent, into an unexpected new mission following a major operational blunder that results in his demotion. His crucial assignment is to unearth the whereabouts of King Gojong’s long-lost gold bars. To execute this delicate task, he sheds his identity and enrolls as an undercover student at the prestigious Byeongmoon High School. There, he meets his homeroom teacher, Oh Soo Ah, a dedicated contract Korean history teacher. Soo Ah possesses an upright personality and holds deep affection for her students. As Hae Sung navigates his covert operation, Soo Ah begins to perceive an uncanny resemblance between him and her first love from childhood, a relationship that left her with the deepest emotional scar. This series intertwines high-stakes espionage with intricate personal connections and the echoes of a painful past.