Beth Bradley stängs av från skolan och med dåliga hemförhållanden söker hon sig istället till gatan, där hon finner en hemlig värld full av gudar och magi. Hon glömmmer nästan sitt gamla liv, tills det söker upp henne igen.
Expelled from school, betrayed by her best friend and virtually ignored by her dad, who's never recovered from the death of her mum, Beth Bradley retreats to the sanctuary of the streets, looking for a new home. What she finds is Filius Viae, the ragged and cocky crown prince of London, who opens her eyes to the place she's never truly seen. But the hidden London is on the brink of destruction. Reach, the King of the Cranes, is a malign god of demolition, and he wants Filius dead. In the absence of the Lady of the Streets, Filius' goddess mother, Beth rouses Filius to raise an alleyway army, to reclaim London's skyscraper throne for the mother he's never known. Beth has almost forgotten her old life - until her best friend and her father come searching for her, and she must choose between the streets and the life she left behind.