The Ejjai Invasion strikes without warning at the height of the Fifth Spacer War. All of humanity-Spacer and lander-face the threat of extinction. Alien masterminds fling countless hordes of hi-tek invader fleets and armies against several hundred worlds on both sides of the border, and the doomsday clock is ticking. Once the invaders conquer so many human worlds, they will become unstoppable, and the grim numbers game grinds on. Humanity suspends their own war and bands together, fighting to survive against the most hyperviolent uplifted species ever unleashed. Naero helps lead the High Crusade to save humanity with her growing Mystic powers. She fights at the forefront beside the dauntless, legendary Spacer Marines of Bravo Command, feared throughout the known galaxy. From world to world, no mercy nor quarter is asked or given, and the fate of all humanity hangs in the balance during: THE HIGH CRUSADE