Undercover High School TV Series (2025) – Watch Online, Release Date, Cast, Episodes, Story, Platform, Trailer, Poster, Review
Trailer, Teaser & Videos
Poster & Photos
Undercover High School TV Series Details
| Original title | 언더커버 하이스쿨 |
| Also known as | Eondeokeobeo haiseukul, Ŏndŏk’ŏbŏ haisŭk’ul |
| Country | South Korea |
| Language | Korean |
| Genres | Action, Comedy, Spy |
| Season | 1 |
| Episodes | 12 |
| Release date | February 21, 2025 – present |
| Aired on | Friday, Saturday |
| Running time | 1hr 10min |
| Age rating | 15+ |
| Starring | Seo Kang-joon, Jin Ki-joo, Kim Shin-rok |
| Directed by | Choi Jung-in |
| Written by | Im Young-bin |
| Produced by | Lee Wol-yeon, Lee Hyang-bong, Bae Ik-hyeon, Ahn Chang-ho |
| Executive producers | Seo Young-rok, Jo Young-jae, Jeong Yeon-ji |
| Production Company | Neo Entertainment, Slingshot Studio |
| Original Network | MBC TV |
Cast & Characters
Main Cast
- Seo Kang-joon as Jeong Hae-seong, An ace field agent of Domestic Team 4 of the NIS, assigned a special mission to recover Emperor Gojong’s gold bars.
- Jin Ki-joo as Oh Su-a / Oh Bong-ja, Hae-seong’s homeroom teacher and a temporary Korean history instructor at Byeongmun High School.
- Kim Shin-rok as Seo Myeong-ju, Chairwoman of the Byeongmun Foundation and Byeongmun High School, and mother of Ye-na.
Supporting Cast
- NIS Personnel
- Jeon Bae-soo as An Seok-ho
Head of Domestic Team 4 of the NIS, a mentor and father figure to Hae-seong. - Jo Bok-rae as Go Yeoung-hun
Hae-seong’s junior agent at the NIS. - Yoon Ga-i as Park Mi-jeong
Another junior agent under Hae-seong. - Lee Seo-hwan as Kim Hyung-bae
Director of the domestic division of the NIS. - Im Cheol-hyeong as Gong Jin-sang
Seok-ho’s classmate and the head of NIS Domestic Team 1.
- Jeon Bae-soo as An Seok-ho
- Student Council of Byeongmun High School
- Kim Min-ju as Lee Ye-na
Student council president and daughter of Myeong-ju. - Park Se-hyun as An Yu-jeong
Student council member, Seok-ho’s daughter, and Hae-seong’s younger sister. - Jang Seong-beom as Park Tae-soo
Student council member and son of a three-term National Assembly member. - Lee Hyun-so as Han Seung-jae
Student council member and son of the CEO of Han Young Law Firm. - Yoon Chae-bin as Yoon Chae-rin
Student council member and idol trainee. - Kim Sun-min as Ji Hyun-joon
Vice president of the student council.
- Kim Min-ju as Lee Ye-na
- Students of Byeongmun High School
- Shin Jun-hang as Lee Dong-min
A student who is bullied by Tae-soo’s group. - Jeong Soo-hyun as Im Yoon-cheol
A bully who relies on words rather than physical violence. - Kang Pil-jun as Son Beom-sik
A keen-eyed student bully. - Shin Ga-eun as Choi Su-jin
A student highly attuned to social media trends. - Kim Seung-beom as Kim Ho-jin
A student deeply involved in online broadcasting and content creation.
- Shin Jun-hang as Lee Dong-min
- Faculty of Byeongmun High School
- Park Jin-woo as Park Jae-mun
Principal of Byeongmun High School and a loyal ally of Myeong-ju. - Oh Yong as Baek Kwang-du
Vice principal of Byeongmun High School. - Lee Min-ji as Kim Ri-an
Su-a’s close friend and physical education teacher. - Noh Jong-hyun as Lee Jun-ho
Mathematics teacher with a crush on Su-a.
- Park Jin-woo as Park Jae-mun
- Other Characters
- Kim Young-ah as Im Cheong-ha
Su-a’s mother and owner of the restaurant Have a Drink With Su-a. - Kim Soo-jin as Jang Man-ok
Seok-ho’s wife, Yu-jeong’s mother, and a maternal figure to Hae-seong. - Gu Min-hyuk as Kim Hyeon-ho
Security guard at Byeongmun High School. - Kim Eui-sung as Seo Byeong-mun
A historical traitor and keeper of Emperor Gojong’s secret safe. - Oh Eui-shik as Jeong Jae-hyeon
Hae-seong’s father and an NIS agent who went missing 22 years ago.
- Kim Young-ah as Im Cheong-ha
Storyline
Jeong Hae-seong, a demoted NIS agent following a major incident that occurred during an operation, is tasked with a special mission of tracking down the whereabouts of Emperor Gojong’s missing gold bars. Hae-seong hides his identity, goes undercover as a high school student at Byeongmun High School, and meets Oh Su-a, his homeroom teacher. Su-a, a devoted teacher to her students, begins to notice the similarities between Hae-seong and her childhood first love, who left her heartbroken and filled with painful memories.
About Undercover High School TV Series
Undercover High School (Korean: 언더커버 하이스쿨) is an ongoing South Korean action comedy spy television series written by Im Young-bin, directed by Choi Jung-in, and starring Seo Kang-joon, Jin Ki-joo, and Kim Shin-rok.
The series began its production and was planned by Namkoong Seong-woo, written by Im Young-bin, directed by Choi Jung-in, and produced by Neo Entertainment and Slingshot Studios. In addition, it aimed to air in early 2025.
In March 2024, Seo Kang-joon was reportedly in talks as the lead actor and his agency told the media that he was positively reviewing it. This would be Seo’s first work after completing his military service in May last year and also his comeback to the small screen after Grid (2022). In May 2024, Jin Ki-Joo and Kim Min-ju were reportedly cast to work along Seo with the former as the female lead in the series. In June 2024, MBC confirmed that Seo and Jin would appear as the lead actors for the series. This was also Seo’s first MBC drama comeback after appearing in Splendid Politics (2015). In the same month, Kim Shin-rok was reportedly cast and was confirmed to appear in July 2024.
Principal photography began in the first half of 2024.
Undercover High School Release Date
MBC announced that Undercover High School would be broadcast in a Friday–Saturday timeslot in February 2025. The series was confirmed to premiere on MBC TV on February 21, at 21:50 (KST). It is also available for streaming on TVING and Wavve in South Korea and on Viu and Kocowa in selected regions.
Undercover High School Episodes
Where to Watch Undercover High School TV Series Online?
