When Haruka Mikami approaches her friend Asuka Morisaki, requesting help in locating her body, confusion ensues as Asuka realizes that other friends have been similarly tasked by Haruka. Initially dismissing the odd request as a prank, the group is abruptly transported to their school at midnight, faced with the unsettling challenge of finding eight scattered pieces of Haruka's body to secure their escape. Amidst the eerie corridors, a menacing figure threatens their lives, adding urgency to their mission. As they race against time to complete the grim task, failure means being trapped in a nightmarish loop of terror, haunted by a murderous presence lurking within the school.