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.
Han Bong-goo
Kang Ye-rim
Seo Sang-woo
Kim Seul-gi
Oh Ki-chul
Do Do-hee
Cheon Jae-su
Ahn Si-yeon
Lee Jong-seok
Ko Ki-tae
Kang Sang-tae
Park-byul
Sang-mi
