🇰🇷 언더커버하이스쿨 Undercover High School 2025 (S1 E01/12, Eng sub)

Jeong Hae Seong, an elite National Intelligence Service (NIS) agent facing demotion, goes undercover at Byeongmun High School to locate King Gojong’s missing gold bars. Posing as a student, he encounters Oh Su-a, a contract Korean history teacher with dreams of becoming a full-time faculty member. As they grow closer, Hae Seong uncovers the school's dark corruption. With the help of others, he begins his fight against the powerful forces at play.