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South Korean filmmaker Yun Jae-yeon directs the thriller Yeogo Goedam 3: Yeowoo Gyedan (Wishing Stairs), the third in a series of horrific tales set in all-girl schools (the other two being Whispering Corridors and Memento Mori). The story involves several teenage ballet students at a remote boarding school for fine arts. The staircase leading up to their dormitory has 28 stairs. Supposedly, a certain spirit will grant your wish if the 29th step appears. Wealthy and outgoing Kim So-heui (Park Han-byeol) is best friends with the more reserved Yun Jin-seong (Song Ji-hyo). Right before an important competition, someone puts glass shards into So-heui's ballet shoes and she later dies. After that, many other frightening events start to happen at the school.