Ace National Intelligence Service agent Jung Hae-seong, portrayed by Seo Kang-joon, is demoted after a mission mishap. Assigned to locate Emperor Gojong's missing gold, he infiltrates the elite Byeongmoon High School as a student. There, he encounters his homeroom teacher, Oh Soo-ah (Jin Ki-joo), who perceives a resemblance to her first love, rekin...
Share