Half a day after the killing begins— Yoshioka and his allies, having failed to escape the island, hide in an abandoned hotel. They are soon attacked by Nakagawa (DAIKI) and his group. Though they manage to fight them off, Yoshioka senses something is wrong. He discovers GPS transmitters implanted in their necks—and turns the system against the guards. After securing weapons and supplies, Yoshioka and his crew finally confront Sakata and his guards in an all-out showdown. The explosive conclusion to this brutal trilogy.

Yoshioka (Tatsuya Nakazawa), imprisoned for killing a yakuza boss, and Kubota (Koki Tora), jailed for murdering his own father, are sent to a prison island where only death awaits. No sooner do they arrive than they are given a hellish “welcome” by the warden, Nakano (Yoshiyuki Yamaguchi), before being thrown into a communal block filled with dangerous inmates. There, they learn of a brutal underground fighting arena— groin strikes, eye gouging, biting… anything goes. Can the two survive long enough to escape the island alive? A high-octane, brutally real battle movie, where pride and fists collide, is born.

A prison island where criminals are isolated from society. Yoshioka repeatedly clashes with the guards, and after Kubota is captured and badly injured, the two are thrown into solitary confinement and beaten relentlessly. Amid the violence, Oogami (Yu Matsuda), the hospital’s chief, orders that they be treated. The next day, Yoshioka and thirty other inmates are taken to a classroom. Standing at the podium is the island’s new owner, Sakata (Daisuke Nagakura), who delivers a chilling announcement: “Today, you’re all going to kill each other.” A deadly free-for-all among young offenders begins. The long-awaited second chapter of the series.