Nightmare

Hye-jin's reunion with her child hood friends should have been a joyous occasion however when a secret is revealed it sends the shy Eun-ju plummeting to her death from a 30-story building. One by one Hye-jin's friends are being hunted down and murdered by what is rumored to be the ghost of Eun-ju. Is this possible or is a more worldly force at work? (official distributor synopsis)