Two years ago, six schoolmates, Ta, Kim, Por, Tair, Noot, and Ko, became entangled in a grudge involving Ta's mother, who died young, and his teacher, Miss Panor. Miss Panor seduces Por, and he discovers she's also having an affair with the sports coach. In a fit of jealousy, Por convinces the group to film her affair and broadcast it at school. The coach retaliates by holding them at gunpoint and sexually abusing them. Seeking revenge, they turn to a monk to curse the coach and later Miss Panor. The coach dies mysteriously, and Miss Panor is found in a state of despair. Years later, the group reunites to pay respects to Miss Panor's late husband, unaware of the horrors that await them.