The secret connecting “Mithril” and “Amalgam” has been revealed. Sagara Soske goes to the island of Merida, the base of “Amalgam,” where the final battle will take place. TDD-1 begins its assault on the island, and Mao, with a small detachment, goes to an eastern country where “Amalgam” seized a nuclear missile and threaten to unleash World War Three. And Chidori Kaname is already ready to launch TARTAROS—a device that can change the world…