The mysterious Kull have waged war on humanity and her colonies for more than a decade. Dropping out of the void, they wrought devastation upon colonies and planets across the stars, leaving a stunned under-strength Earth fleet scrambling for answers. Captain Thomas Parks was that answer. Leading the human fleet against the alien invaders, he stopped them at Gladius 9, creating a stalemate in the war and buying humanity precious time. And as the Valkyrie 4 launched from the Navis shipyards with Parks at the helm, the ship's technological advantages promised to end the war once and for all. But the Kull haven't been idle. They have their own surprise for the human race, and while Valkyrie searches for an elusive enemy, Parks discovers that everything on his robotic ship isn't what it seems. As he searches for the alien home world in a race against time, the Valkyrie's intelligent computer reveals a secret that puts the mission and the fate of the human race in jeopardy.