When the Earth is threatened by a slowly expanding sun, mankind embarks upon a mission to send a mammoth Worldship to settle a new planet across the stars. The preternatural races step out of hiding to work with the humans to save what they can from their dying world. With the aid of the Fae, shape shifters, Vampires, and other creatures of supernatural lore, the Worldship, Leviathan, is complete one thousand years later.

The peoples of the Worldship are at war after the loss of her greatest hero. Recovering from the damage wrought from the detonation which created a new planetary system, the Vaughn administration is somehow developing new, alien technologies to fight the Greater Fae and their allies. It is up to the people of House Shade to discover the source of this new technology before the so far bloodless war becomes more violent.

President Vaughn is fixated on switching his goal from obtaining the FTL (faster than light) drive that House Shade is keeping from everyone, to procuring the ultimate weapon his mysterious benefactor wants to possess.

The only way life can ever go back to normal, with the people of the Leviathan living at peace, is for House Shade to secure an elusive armistice which neither side seems to want.