<Korean TV Series NOW> ”Undercover High School” EP12 (final episode), Seo Kang Joon completes his mission = Viewership rating 5.8%, Synopsis/Spoiler
*This article contains spoilers. In EP12 of the MBCTV series "Undercover High School" (viewership rating: 5.8%), the group completed their mission to retrieve Emperor Gojong's gold.