Select season
Where to watch
This title isn’t available on any of the streaming services we track yet. Click the button below to promote and highlight it.
A disgraced agent reenters a world of lost love and betrayal while hunting for stolen gold in a 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.