Underground Boys' School

Seo Yu-ah and her friends descend into the basement to fix the air conditioner during their night study session. They hear rumors that a boys' school once stood where their school once stood 100 years ago, and that an unpleasant incident had occurred there. In the basement, Yu-ah and her friends encounter bizarre phenomena that could never occur in the real world. Chased by these phenomena , Yu-ah arrives at a boys' school that has been restored to its original state 100 years ago. The rumored location lies dormant beneath our school. Thus , Yu-ah struggles desperately to survive and return from the underground boys' school... Places frequented by countless people are filled with stori...