Undercover High School — Season 1, Episode 6: Hye Seong's Father's Notebook
Action & Adventure, Comedy, Drama • 70 min • 1 season, 12 episodes • ★ 8.0/10
Episode synopsis
The school's security guard dies, leaving Hae Seong a notebook belonging to his missing father. The revelation is shocking, and he storms the NIS for answers. The answer pushes him away from the mission, and he takes time off. However, he resolves to continue but returns only to discover Su A witnessed it all
About Undercover High School
Ace NIS agent Jung Hae-seong is demoted after a mission failure. He goes undercover at a high school to locate King Gojong's missing gold, meeting his teacher Oh Soo-ah, who sees him as her lost first love, stirring old heartbreak.