Undercover High School - Season 1 - Eps 6: Hye Seong's Father's Notebook
The school's security guard dies, leaving Hae Seong a notebook belonging to his missing father. The revelation is shocking, and he storms the NIS for answers. The answer pushes him away from the mission, and he takes time off. However, he resolves to continue but returns only to discover Su A witnessed it all
About Undercover High School
Title: Undercover High School
First Air Date: 2025-02-21
Last Air Date: 2025-03-29
Status: Ended
Rating: 7.896/10 (from 48 votes)
Language: KO
Seasons: 1
Total Episodes: 12
Network: MBC
Genres: Action & Adventure, Comedy, Drama
Production Companies: Unknown
Synopsis
Byungmoon, Korea’s top private high school, is rife with corruption, where status and success matter most. Hae-sung, a top NIS agent, goes undercover at Byungmoon to find Emperor Gojong’s hidden gold and uncover the truth behind his father’s disappearance. Cold and calculated, he sees the school as an obstacle—until he connects with students and a former crush and becomes a reluctant hero. Torn between duty and newfound bonds, can he still complete his mission?
Cast
Seo Kang-joon
Jeong Hae-sung
Jin Ki-joo
Oh Su-ah
Kim Shin-rock
Seo Myung-ju
Kim Min-ju
Lee Ye-na
Yoon Ga-i
Park Mi-jung
Kim Young-ah
Im Chung-ha
Lee Hyun So
Han Seung-jae
Kim Seung Beom
Kim Ho Jin [Informant]
Kang Soo-bin
Bully Student (Eps 2)
