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.
Directed byJae-yeon Yun
Written bySoo-ah Kim, Shin-ae Lee, Soyoung Lee
CountrySouth Korea
Runtime100 min
On screen
Song Ji-hyo
Park Han-byeol
Jo An