Undercover High School(2025)

Undercover High School is a Korean series following Ace NIS agent Jung Hae-seong, who is demoted after a failed mission and forced to infiltrate a high school undercover. His assignment: locate King Gojong's missing gold. The operation grows complicated when he meets his high school teacher, Oh Soo-ah, who mistakes him for her lost first love—reigniting painful memories from her past. As Hae-seong navigates his double life between spy work and classroom duties, the emotional stakes rise alongside the mystery of the treasure. The series blends espionage thrills with romantic tension, exploring themes of identity, redemption, and second chances in an unconventional setting.

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