Qalea Drop (The Spiral Wars #7)

The UFS Phoenix embarks on a dangerous quest for the AI Ceephay Queen who rules at the heart of the Reeh Empire. For cover, Phoenix will use the enormous war being launched by the new rulers of the croma, Croma'Dokran, into reeh space. This war is intended in part to evacuate the corbi homeworld of Rando, thus righting a great wrong of croma history by rescuing two hundred million corbi from reeh tyranny.

While Lisbeth defies her parren seniors to use drysine and parren firepower in assisting the evacuation, Erik captains Phoenix, accompanied by Styx's four drysine warships, to the world of Eshir, where Styx insists the Ceephay Queen was once located. There, in the ancient, ruined city of Qalea, Trace and Styx must lead an away mission through buried layers of Reeh Empire history to uncover its long-forgotten secrets. Discovering the Ceephay Queen's present location could set them on the road to saving humanity. But Qalea's secrets have been hidden by the reeh for millennia, secrets that could rock their Empire, and they will stop at nothing to keep hidden.