best episodes of Undercover High School poster

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?

1 Seasons
12 Episodes
Returning Series
Action & Adventure Comedy Drama
Cast & Characters
episode image Episode 1
0.0/10

#1 Episode 1

S1:E1
Feb 21, 2025

episode image Episode 2
0.0/10

#2 Episode 2

S1:E2
Feb 22, 2025

episode image Episode 3
0.0/10

#3 Episode 3

S1:E3
Feb 28, 2025

episode image Episode 4
0.0/10

#4 Episode 4

S1:E4
Mar 1, 2025

episode image Episode 5
0.0/10

#5 Episode 5

S1:E5
Mar 7, 2025

episode image Episode 6
0.0/10

#6 Episode 6

S1:E6
Mar 8, 2025

episode image Episode 7
0.0/10

#7 Episode 7

S1:E7
Mar 14, 2025

episode image Episode 8
0.0/10

#8 Episode 8

S1:E8
Mar 15, 2025

episode image Episode 9
0.0/10

#9 Episode 9

S1:E9
Mar 21, 2025

episode image Episode 10
0.0/10

#10 Episode 10

S1:E10
Mar 22, 2025

episode image Episode 11
0.0/10

#11 Episode 11

S1:E11
Mar 28, 2025

episode image Episode 12
0.0/10

#12 Episode 12

S1:E12
Mar 29, 2025

Cast & Chracters

character image Jeong Hae-sung

Jeong Hae-sung

Actor: Seo Kang-joon
character image Oh Su-ah

Oh Su-ah

Actor: Jin Ki-joo
character image Seo Myung-ju

Seo Myung-ju

Actor: Kim Shin-rock
character image Lee Ye-na

Lee Ye-na

Actor: Kim Min-ju
character image Park Mi-jung

Park Mi-jung

Actor: Yoon Ga-i
character image Im Chung-ha

Im Chung-ha

Actor: Kim Young-ah
character image Han Seung-jae

Han Seung-jae

Actor: Lee Hyeon-so
character image Kim Ho Jin [Informant]

Kim Ho Jin [Informant]

Actor: Kim Seung Beom
character image Bully Student (Eps 2)

Bully Student (Eps 2)

Actor: Kang Soo-bin

Name Department Job
Choi Jeong-in Directing Director
Im Young-bin Writing Writer

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