With hard work and dedication on lock, a group of homeless men trains to compete in a global tournament — despite a cranky coach.

Two teenagers joining the same class in a high school die on the same day. The one to be top of the class is killed by a big knife on the street, the other - the second best of the class indeed - seems to be jumped from the top of the school building. Everybody believes that he first killed his classmate and than himself. But when the police finds small pill boxes into the stomachs of both kids confessing their murder two South Korean cops are torn into a new case of murder series. While they try to hunt down the serial killer, more pupils are getting killed...

Yu-jin and her blind mother move to a small village from Seoul. On her first day at the new school, Yu-jin gets picked on by her classmates. Along with other victims of hatred, Yu-jin puts a curse on the four girls tormenting them through a Ouija Board. On her second day at school, one of the spellbound bursts into flames and dies just as she sits down where Yu-jin used the board. Next day, another victim burns to death, and now the school is enclosed by horror.

Young-goon, mentally deranged and frequently electro-charging herself with a transistor radio, has been admitted into a mental institution. Firmly believing herself to be a cyborg, she refuses to consume like a human being. Il-soon is another patient, who catches the eye of Young-goon and soon becomes a close friend. Il-soon is now confronted with the biggest task: to cure Young-goon's mental problem and have her eat real food.

So-yeon suffers from claustrophobia and inherits a Persian cat when its owner dies. She begins having nightmares and people around her begin dying as she searches for the truth.