Title：Eondeokeobeo Haiseukul Year：2025 Genre：Action / Comedy / Thriller Language：Korean Country：South Korea Actors：Seo Kang-joon / Jin Ki-joo / Kim Min-ju Plot：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.
