While the Earth tried to quell the violence after the alien invasion, teams of engineers went to the moon to create ships capable of fighting back. After they cleared the dead, the Lunar Colony reopened as a technology hub to mine asteroids for materials and turn them into starships. Calliope Morrigan arrived on the moon, completing designs for a ship before any of her rivals. The military deemed her ship too small and backed Mattias, an engineer promising a ship so large it would need fusion reactors, a technology far beyond their reach. Arn Lasserman, head of nuclear engineering, allied with Calliope to create a stronger ship with engines he designed, cementing the enmity of her rivals. The violence against Calliope escalates as her ship nears completion. Rivals for control of resources, cluster time, and engines escalate as satellites range farther out into the solar system to mine asteroids for metals to build their ships. A nest of aliens is discovered close enough to attack at any time. The pressure ramps as humanity’s future and ability to survive hang in the balance. Calliope must find ways to maintain her alliances and make crucial new ones. She pushes technology to its limits and her ambitions expand. Can she propel her technology forward and bring humanity in her wake?