Demoted NIS agent assigned to track Emperor Gojong's missing gold bars. He goes undercover as a high school student at Byeongmun High School to carry out his mission.
Primary target of investigation
Fellow student in undercover mission
NIS handler directing the undercover operation
Provides inside information about school
Forms genuine friendship at school
Competes for attention and position
Fellow NIS agent working undercover
NIS agent develops feelings for fellow student
Explore the full interactive character relationship map of Undercover High School