An unstoppable scourge lays siege to Earth.
Can humanity survive a world-destroying force that has never known defeat?
The Ynzu Siege nears its third bloody decade. Battered to the breaking point, the United Commonwealth-Protectorate recalls its combat frame carrier fleet for a last stand at Earth.
Lt. Dex Trapper must battle for his life when the Ynzu strike his remote extrasolar colony. Cut off from the UCP, Dex and his CF tech Thatch make a desperate break for help in a century-old XSeed.