South Korean horror. After her sister Eon-ju (Kyeong-ah Jang) commits suicide by jumping from the roof of her school building, Jeong-eon (Shin-ae Yu) chooses to investigate the unexpected incident further. Speaking to three of her sister's friends she is told that the four girls had previously made a suicide pact and that Eon-ju was the only one to fully commit. But now that the other girls have abandoned their friend and cheated the pledge, Eon-ju has come back from beyond the grave to make them pay...
