A homeroom teacher of Yosan Private High School has an accident, and thus a substitute comes to fill in. Han Bong-Gu is a mysterious man, and after strange occurrences the class president Ye-Rim tries to get to the bottom of this mystery.
Om Gi-dzhun , Kim So-khion , Li Min-khiok , So Shchin-e , Pek Syn-do , Kim Dzhi-an , Kim Da-e , Khak Chin , Chi Yn-son , Kim Dzhi-ion
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