Asian Drama

Late one night at a high school chapel, four students make a pact to kill themselves that night. The girls sign the pact with their own blood and pledge that if anybody survives they will be haunted for the rest of their lives. Then only one of the four students, Eon Ju, actually commits suicide by jumping to her death.

The next day, rumours fly around their school on the reasons why Eon Ju killed herself. The remaining three girls keep to themselves as they are haunted by their pledge and soon enough the school becomes covered in blood.

On the eve of the dreaded university entrance examinations, the lives of 24 of the smartest and brightest students at one high school are on the line. Locked inside the school with no way to escape, a television monitor broadcasts a terrified Hae Yeong, the top student at the high school, locked inside an aquarium that slowly begins to fill with water. A voice from the monitor announces if the students cannot finish the exam administered within the allotted time given, Hae Yeong will die and so will everyone held captive inside the school. Thus begins the examination that will determine whether they live or die.