A prequel conflict: the humanoids of Amnelia used the weapon A.N. — All-Nothing — to annihilate the world Blazar in a dispute over the moon Mahsah, and the Thiima — cyborg-chimera biovessels engineered to protect the universe from exactly that kind of threat — responded by swarming Amnelia. The military was badly damaged before scientists built the Silver Hawk fighters from A.N. technology and reverse-engineered Thiiman life systems. Two pilots, Sameluck Raida and Lutia Feen, are chosen to strike the main Thiima base: Kazumn, a satellite of the planet Darius.