Kyle Riggs sits uneasily upon Earth's throne. He's liberated his homeworld from a tyrant, only to replace him. In The Dead Sun, the ninth book of the Star Force Series, the Great War between life and the machines reaches its final chapter. Both sides have new technology and expanded industrial bases. Star Force and the machines attempt to exterminate one another in a final, glorious conflict. Along the way, Riggs finally learns who his real friends and enemies are.