故事內容：
新世紀之初，某個國家陷入衰敗，失業率超過15%，多達一千萬人失業。同時八十萬名學生輟學，青少年犯罪率亦急升。失去信心的大人出於對年輕人的恐懼，通過一條簡稱為「BR法」的《新世紀教育改革法案》，以死亡的恐怖支配年輕人，從而奪回大人的威嚴。
某日，城岩中學3年B班被隨機選中成為了「BR法」的實施班別。原本開開心心的畢業旅行，竟成為四十二個只能活一個的廝殺現場。荒島之上互相殘殺，若不服從格殺勿論。為求自保，面對曾共度無憂時光的同窗，亦只能表露真本性…
At the dawn of the millennium, a nation collapsed. The unemployment rate is more than 15%, over 10 million citizens were out of work. At the same time, 800 thousand students boycotted school and the juvenile delinquency have surged. Adult lost confidence and fearing the youth. In order to regain their dignity, the government eventually passed the Millennium Educational Reform Act, aka BR Act, to control youngster with fear of death.
One day, a group of 9th graders from Shiroiwa Junior High School is randomly chosen as the experimental class of BR Act. They are hijacked to fight the Battle Royale on a desert island and only one can survive. Terror and panic challenge the students’ fragile trust in each other. Is there any way to save the whole class? Or do killing each other is the only way to survive? No time to hesitate, the brutal game now begins!
