Set three years following the events portrayed in 'Battle Royale', one of the survivors, Shuya Nanahara, has become a notorious anti-government terrorist. Leading the group 'Wild Seven' he has declared war on the adults who enforce the BR Act. To counteract this the government creates a new act, one that forces a group of Junior High School students to act as an anti-terrorist force and hunt down Nanahara in 72 hours or face death.