An ancient world holds many secrets. With the Celestial ship Tartarus now under his command, the former Renegade known as Jace Hughes heads toward a lost colony in search of answers. What he finds may change the war forever. Meanwhile, the Celestials are drawing closer to locating Earth with every passing day. With an invasion looming, the Alliance has little time to prepare its forces. The Union, Sarkonians, and Earth must unite together or die alone.