It has three years following the events of the original Battle Royale, and Shuya Nanahara has become an internationally-known terrorist chose to bring down the government. His group, Wild Seven, stages an attack that levels buildings in Tokyo killing 8000 people. In order for that government to study the benefits of"teamwork", the newest students work in pairs, together with their collars electronically linked so when these is murdered, the other dies as well. They must kill Nanahara in three days or perish.