A staircase leading to the dormitory of a remote boarding school usually has 28 stairs, but every so often there appears to be 29. When someone steps on the mysterious extra stair, the horro... Read allA staircase leading to the dormitory of a remote boarding school usually has 28 stairs, but every so often there appears to be 29. When someone steps on the mysterious extra stair, the horror begins.A staircase leading to the dormitory of a remote boarding school usually has 28 stairs, but every so often there appears to be 29. When someone steps on the mysterious extra stair, the horror begins.
Park Han-byeol
- Kim Sohee
- (as Han-byeol Park)
Jo An
- Eom Hye-ju
- (as An Jo)
Park Ji-yeon
- Han Yun-ji
- (as Ji-Yeon Park)
Moon Jeong-Hee
- Dance Teacher
- (as Jung-Hee Moon)
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