Deep within hostile Reeh Empire space, the UFS Phoenix is hunting another AI queen. This one is named Chion, and she has been installed at the heart of Reeh Empire power, enslaved against her will, for the past 8,000 years. Within her vast knowledge lies the most intimate data on Nia, the deepynine queen now threatening humanity's very existence. Freeing Chion could be the key to beating Nia, and saving humanity.

But Phoenix's allied drysine queen Styx, and Chion's AI former sidekick Shali, both want Chion for their own purposes. And Chion, of course, will be defended by the full might of the Reeh Empire. To free her, Phoenix and Styx must win control of an AI fleet known as Raka, derived from Nia's deepynine technology long ago, and used by the Reeh Empire for special missions. But this will mean placing the most powerful AI war fleet in known space into the hands of Styx. Shali insists it's suicide, and every bit the existential threat to humanity that Nia is. But do Captain Debogande and Major Thakur have any other choice?