Yun Jin-sung (Song Ji-hyo) and Kim So-hee (Park Han-byul) are best friends studying ballet at an all-girls art school. However, their friendship turns sour when they find themselves competing for a single spot in a Russian ballet school. Jin-sung learns from an odd student named Eom Hye-ju (Jo An) of an old legend that if a person climbs the twenty eight steps leading up to the school's dormitory and finds a twenty ninth step, then a fox spirit will grant that person's wish. Curious, Jin-sung climbs the stairs and comes across the twenty ninth, happily wishing to gain the spot. To her surprise and anger, So-hee is selected instead. Jin-sung declares her hatred toward her and accidentally sends So-hee down a flight of stairs during a scuffle. So-hee is left unconsciousness and hospitalized.