Undercover High School, with the original title "언더커버 하이스쿨", is Action & Adventure, & Comedy , and is an upcoming television series, available to stream on MBC. It consists of 1 season, with 1 episode.
An ace field agent for the National Intelligence Service gets demoted after a major incident. He is assigned to find King Gojong’s missing gold bars and goes undercover as a student at a prestigious high school. There, he meets his homeroom teacher, a dedicated Korean history teacher with a strong affection for her students. She begins to see her first love, who deeply hurt her in the past, in the undercover agent.