With a serial killer loose on Carnival Row, and a government that turns a blind eye to the deaths of its lower class citizens, Rycroft Philostrate, a war-hardened investigator, is the only person willing to stop the murders and maintain the fragile peace. But when Vignette Stonemoss, a faerie refugee, turns up in the Burgue, she forces Philo to reckon with a past he's tried to forget.

Born of a god but raised as a man, Perseus is helpless to save his family from Hades, vengeful god of the underworld. With nothing to lose, Perseus volunteers to lead a dangerous mission to defeat Hades before he can seize power from Zeus and unleash hell on earth. Battling unholy demons and fearsome beasts, Perseus and his warriors will only survive if Perseus accepts his power as a god, defies fate and creates his own destiny.

Using massive piloted robots to combat the alien threat, earth's survivors take the fight to the invading alien force lurking in the depths of the Pacific Ocean. Nearly defenseless in the face of the relentless enemy, the forces of mankind have no choice but to turn to two unlikely heroes who now stand as earth's final hope against the mounting apocalypse.