India, March 31 -- One of the most popular action K-dramas of 2025, Undercover High School, concluded with a satisfying finale and a rather interesting ending. With fans curious to know if Hae-seong finally completed his mission and if Myung-joo was held accountable for her crimes, we bring you all the details of the K-drama Undercover High School, from its plot to the ending, explained.

The story follows National Intelligence Service (NIS) agent Jeong Hae-seong (played by Seo Kang-joon), who goes undercover as a high school student to track down Emperor Gojong's missing gold. One of the highest-rated K-dramas of 2025, according to IMDb, Undercover High School is directed by Choi Jung-in.

Talking about his character in the show, lead a...