“Undercover High School” (2025) is a detective series about an experienced investigator, Jeong Hae-seong, who is forced to return to high school disguised as a student in order to carry out a dangerous investigation. The protagonist must not only gather evidence and monitor suspects but also learn how to live a double life.

What is the series “Undercover High School” about?

After a series of mysterious incidents at a prestigious high school, Jeong Hae-seong receives an unusual assignment — to infiltrate the school while posing as a student. For a seasoned detective, the mission becomes a real challenge, as he must not only conduct an investigation but also play the role of an ordinary teenager every single day.

At school, Hae-seong meets a variety of students and teachers and gradually realizes that almost everyone is hiding secrets of their own. One person who becomes particularly suspicious is teacher Oh Soo-a, who starts to believe that the new student is behaving rather strangely. Meanwhile, the mysterious events continue to escalate, and seemingly unrelated incidents unexpectedly turn out to be connected.

The closer Hae-seong gets to the truth, the harder it becomes to conceal his real identity. His double life slowly spirals out of control, and the investigation begins to threaten not only his career but also the people around him.

Where to watch the series “Undercover High School”?

Log in to the Kyivstar TV website or app and watch this and other series in high quality in Ukrainian. Choose a convenient subscription plan, connect up to 5 devices, and enjoy watching online or download content to watch later even without internet access.