Undercover High School (Ep1)

Hae-seong, an agent of the National Intelligence Service, becomes a student to find King Gojong's gold bars.

71m

Undercover High School (Ep2)

In a situation where he has to go undercover again, Hae-sung is suspected of being a school bully by Soo-ah.

68m

Undercover High School (Ep3)

Haesung, who discovered the connection begins to investigate ghost stories at school.

69m

Undercover High School (Ep4)

Haesung begins his extraordinary journey to pass the difficult student council selection requirements!

67m

Undercover High School (Ep5)

While Hae-sung is investigating the grandfather clock, he receives a phone call from an unknown person.

69m

Undercover High School (Ep6)

Hae-sung finds out that his father, who went missing 22 years ago, was on the same mission as him.

71m

Undercover High School (Ep7)

Haesung finds out that Soo-ah is his first love, and tries to calm his pounding heart.

66m

Undercover High School (Ep8)

Hae-sung learns of the existence of a spy in the National Intelligence Service.

70m

Undercover High School (Ep9)

As Su A recovers in the hospital following the attack, Hae Seong and the team uncover the culprit.

68m

Undercover High School (Ep10)

To everyone's shock, Seo Myeong Ju returns to the school. Unimpressed by Hae Seong, she expels him.

68m

Undercover High School (Ep11)

The gold bars vanish just as they are within reach, and Seo Myeong Ju suspects Hae Seong has them.

69m

Undercover High School (Ep12)

After finding out that an arrest warrant had been issued for her, Seo Myeong Ju decides to end everything.

69m