One night, second-year high school student Nishina Airi is abducted. Upon waking, she finds herself trapped in a strange, isolated space alongside other students from her school, compelled to participate in the "Werewolf Game." Thus begins a death game steeped in fear and terror, pitting "Werewolves" against "Villagers" and forcing them to commit murder—a game with such absolute rules that defiance is met with gruesome death.