Desc: Yeogo goedam 3: Yeowoo gyedan: Directed by Jae-yeon Yun. With Song Ji-hyo, Park Han-byeol, Jo An, Park Ji-yeon. 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.