Undercover High School Sinhala Subtitle Download: Here you will get the Sinhala Subtitle of the TV series Undercover High School (2025). This action-comedy thriller follows ace NIS agent Jung Hae-seong, who is demoted after a mission failure. To redeem himself, he goes undercover at a high school to locate King Gojong’s missing gold. However, things take an unexpected turn when he meets his teacher, Oh Soo-ah, who mistakes him for her long-lost love, bringing back unresolved emotions.
The leading stars of this series are Seo Kang-joon, Jin Ki-joo, and Kim Min-ju. Undercover High School blends thrilling espionage with comedic high school antics, offering a refreshing take on action-packed storytelling. The series currently holds an 8.2/10 IMDb rating based on 1.2K votes, with a popularity rank of 559 (+65), showcasing its growing fanbase.
Undercover High School Series Info:
- Series: Undercover High School (Eondeokeobeo Haiseukul)
- Genre: Action, Comedy, Thriller
- Language: Korean
- Release Year: 2025–
- Run Time: 1h 10m (per episode)
- IMDb Rating: 8.2/10
- IMDb Votes: 1.2K
- Starring: Seo Kang-joon, Jin Ki-joo, Kim Min-ju
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EPISODE EP01 UPDATED
Undercover Detective: The Secret of the School Grounds
Jung Hae-sung is a highly skilled, cunning, and trained agent working for South Korea’s National Intelligence Service (NIS). Dangerous operations, arms dealing, and dealing with international criminals are part of his daily routine. But his next assignment is something completely different and unusual from his usual duties.
The intelligence service receives a tip that a valuable gold disc (or gold bar) stolen by the Russian mafia has been hidden in Byungmun High School, one of the country’s most prestigious and highly educated schools. Since the recovery of this gold disc is also important for national security, Jung Hae-sung is entrusted with the mission to recover it.
The most challenging part of the mission is that in order to find the golden disk, Hae-sung must completely hide his true identity and enroll at Byungmun High School as an ordinary eighteen-year-old high school student. For this seasoned agent, who has been involved with the world’s most dangerous criminals for years, suddenly having to wear a school uniform, carry a bundle of books, and sit in a classroom is a great challenge and a funny experience.
He has to study like the other students at school, take exams, listen to the teachers’ reprimands, and participate in school activities. During all this, he must be very careful not to arouse suspicion about the secret mission assigned to him. His main goal is to find at least a clue to where the golden disk hidden in the school is.
In the meantime, Hae-sung meets new friends at school. He builds real friendships with them. Sometimes, even the innocent feelings inherent in youth may creep into his mind. But all of that is only on the surface. His subconscious mind is always working like a detective. While enjoying the beauty and fun of school life, he is always alert to find a clue to the hidden gold and face any danger that may come his way.
Every moment he wanders around the school, he is afraid that his secret will be revealed. This detective, who appears to be an ordinary student, has to face problems that are more complex than the school curriculum. Will he be able to find the golden disk? Will he be able to complete the mission without revealing his true identity? What will happen to the relationships between him and his school friends?
This double life of Jung Hae-sung becomes an extremely interesting journey full of action, humor, friendship, and curiosity. The challenges he faces as a student and a detective at the same time, as well as how they clash with the dark secrets hidden within the walls of Byungmun High School, are the main crux of this story.
