"This is the signal to begin the countdown." The Second Wave—the "Purification"—has commenced. Key figures—Ishimaru, Sakurai, Kishi, Kai, Lee...—are being killed in the order of the list. However, the Japanese government remains resolute, refusing to yield to the terrorists. Operating behind the scenes are the police, the Counter-Minority Special Selection Unit, the Self-Defense Forces, the U.S. Department of Defense, and the Minorities Control Committee official, Tosaki, alongside high school student Minorities, Kei Nagai. "With the conclusion of the Second Wave, we will advance our pieces to the next wave. The Third—that will be the final wave." Kei devises a plan to neutralize the Minorities, Sato, but unbeknownst to him, cracks are beginning to show in the strategy... The radical Minorities faction has finally begun to move. What is the true aim of history's most vicious and ruthless terrorist, Sato? Who will stop Sato?