We hoped, desperately, that they came in peace. We were wrong. Thirty years after the Second Swarm War devastated Earth and its colonies, a powerful, mysterious alien ship has invaded our space. Entire planets are ravaged, whole moons shattered. Any starship sent against it never comes home. But Admiral Proctor, a war hero from our last brush with annihilation, is called out of retirement to take the reins of humanity's newest starship. The ISS Independence and her crew, with Admiral Proctor at the helm, will stand as Earth's last defense. Somehow, against all odds, they will save us, even when our enemy is not just an unstoppable alien ship, but a ghost from humanity's past bent on its utter destruction. And if they fail, we fall. For good.

The fog of war clouds everything. Enemies lurk in the shadows, within the very fleet sworn to protect United Earth. Conspiracies and murder abound, and in the background…. The stalled alien invasion lurks. The Golgothic ship has burrowed deep into the core of Saturn’s moon Titan, whose mass slowly but inexorably increases. The Dolmasi, once allies of United Earth in the Second Swarm War, now attack us, unhinged and without reason. And all the while, Admiral Shelby Proctor works to answer the most urgent questions of all: what was a piece of the old ISS Victory doing inside the Golgothic ship? And was it Captain Tim Granger’s voice that whispered from the doomed ship, “Shelby, they’re coming?” And … are they the Swarm? If they are, God help us all.

War. It rages across United Earth space, claiming millions of lives. The Swarm have returned, larger, more fierce, and more technologically advanced than ever before. The voice from Saturn's moon Titan claiming to be Tim Granger is warning humanity that this time, the Swarm may be unstoppable. Admiral Shelby Proctor, on the run for the suspected murder of the United Earth President, knows that humanity's only hope may be a hero that's been dead for thirty years, and travels to the center of Titan to find him in Earth's darkest hour. The fleets are assembled, all the races united against the overwhelming enemy from another universe. And now all they need a legendary hero to lead them to victory.