In the future, the terminally ill can prolong life by surrendering their consciousness to a cybernetic life form that is then recruited into the notorious Legion of the Damned, an elite fighting unit charged with protecting humanity.

All her life, Lady Catherine Carletto (called Cat) has lived for nothing but the next party, the next lover, the next expensive toy. Until, in a bloodthirsty power grab, Imperial Princess Ophelia and her cadre of synth assassins murder her brother the emperor, and go on to purge the galaxy of his friends and supporters - including Cat’s family. The Carlettos are known to be staunch supporters of the Emperor and Carletto Industries has been in the forefront of his pet project - developing cybernetic technology for the masses.

After two brutal, bloody struggles for their very existence against implacable alien foes, humanity is victorious, but not at peace. As distrust and accusations consume the political discourse between the two major factions, the Eastern Star Alliance military has already begun executing small raiding missions into United Terran Federation space. The Federation fleet, still reeling from the last war, is in no shape to try and protect its own borders.

Out of the blue, a young Space Fleet officer's dream becomes reality: He's made captain of a starship. Just in time for the return of humanity's most terrible enemy, after 50 years of peace. To survive against this enemy, Captain Tad Thatcher will have to do more than learn how to become an effective commander, or how to wrangle his wayward crew. He will need to reinvent space combat. From scratch.

The Phage War had been a devastating conflict for the Terran Confederacy. Even with the destruction of their terrifying, implacable foe, humanity is still reeling. Political alliances are crumbling, and their mighty fleet is in tatters. There is nothing to celebrate, even after such a complete victory. They soon learn that there are other stellar neighbors - and they've been watching the conflict with great interest. One species comes with an offer of friendship and alliance, but humanity is weary and distrustful.