Japan will sink down to the deep sea. The governments only hope is evacuate all Japanese to some other countries.

"This time it's war." Three years after the failure of the last BR program, a second act is forged and a class of students are sent to an island with one objective: kill international terrorist Shuya Nanahara.

Young assassins Azumi and Nagara continue their mission to prevent a civil war. In their hunt for Masayuki Sanada, who is protected by both an army and a dangerous clan, they meet Ginkaku, a person who shows a remarking resemblance with former friend Nachi.