Whispering Corridors 3: Wishing Stairs

Legend has it, if you climb the 28 stairs leading to the school dormitory and count each step aloud, a 29th step will appear and a spirit will grant you a wish. If your intentions are honorable, your wish can be a blessing of good fortune. But at this high school, where paranoia and jealousy reign supreme, malicious wishes are about to unleash an unspeakable evil. Be careful what you wish for; some wishes were never meant to be granted. (official distributor synopsis)