Corpse Party opens with a group of classmates performing the Happy Sachiko charm after school, hoping the ritual will help preserve the friendship that binds them together. Instead, the ceremony collapses into disaster and pulls them into the ruins of Tenjin Elementary School, a place that has become a distorted phantom of the building that should have been demolished years earlier.
Trapped away from the real world, the students are forced to move through decaying hallways, abandoned classrooms, and other corners of the cursed campus while searching for a way out and for the truth behind the haunting that has consumed the school. Every step makes the situation more dangerous, because trust becomes fragile and the group can only survive if they stay together long enough to confront the horrors waiting inside. The mystery of Tenjin Elementary gives the story its dread, but the heart of Corpse Party is the bond among the classmates as they struggle to hold on to each other in the middle of an escalating nightmare. The tragedy is given extra weight by Corpse Party: Missing Footage, which shows a glimpse of their ordinary lives on the day before everything falls apart.