Season
- Season 1 2025-02-21
- Season 0 2025-01-27
Episode
Undercover High School Specials
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.
