On her way to her first day of high school, Rinka stops to grab a shoe that slips off her foot at a crosswalk—and is struck and killed by a passing car. She wakes in front of NEVAEH Academy, a purgatory where deceased students must follow strict rules enforced by masked faculty. Almost immediately the academy is disrupted by the Bad Apples—a student faction that refuses to obey the administration. Rinka must choose which side she belongs to: the Bad Apples, who rebel against the system, or the Good Apples, who work within it. Each path branches in different directions, with multiple endings shaped by the choices she makes along the way.