Doctor
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.
Young-goon's Aunt
Cha Young-goon (Lim Su-Jeong) é hospitalizada numa clínica psiquiátrica, por acreditar que é uma ciborgue. Ela recusa toda a comida que lhe oferecem, preferindo carregar as "baterias" através de um transistor. Cha usa a dentadura da avó e fala com todos os aparelhos eletrônicos. Mas seu caso não é o único: ela está rodeada de pacientes que têm interlocutores imaginários. Quando o belo e anti-social Park Il-Soon (Rain) é internado, tudo muda para ela. Não leva muito tempo para que eles se envolvam, mas a saúde da menina piora cada vez mais.
Nurse
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...
nurse
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.
