Watch: Seo Kang Jun Goes Undercover As A High School Student In Upcoming Comedy Action Drama

Upcoming drama “Undercover High School” has unveiled its first teaser!

“Undercover High School” is a comedy action drama that follows Jeong Hae Seong (Seo Kang Jun), a National Intelligence Service (NIS) agent who goes undercover as a high school student to track down Emperor Gojong’s missing gold.

The teaser features Seo Kang Jun as NIS agent Jeong Hae Seong, immediately grabbing viewers’ attention with his striking appearance. Hae Seong embarks on a new mission that requires him to blend in as a high school student. Wearing a school uniform and adopting a serious attitude, his first appearance captivates with his charisma.

Hae Seong’s mission is to recover state assets worth 800 billion won (approximately $556 million). The video shows him on a relentless pursuit to track down the missing gold bars, featuring thrilling action sequences that keep viewers on the edge of their seats.

One standout moment occurs when Hae Seong says, “Well then, shall we begin?” building suspense and signaling his unwavering determination to complete the mission.

The teaser highlights a dramatic entrance and exciting action as NIS agent Hae Seong begins his mission to infiltrate a high school. Viewers are eager to uncover the secrets he’s determined to reveal.

Watch the full teaser below!

“Undercover High School” is set to air on February 21 at 9:50 p.m. KST. Stay tuned!

In the meantime, watch Seo Kang Jun in “I’ll Go to You When the Weather is Nice”:

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