"You keep out of harm's way, Spohie Farthing" Her father's advice seemed only sensible. The flying island of High Haven was a dangerous place. So what was she doing down on the docks at midnight, talking to the sinister gentleman with the iron jaw? Where had he come from on his majestic space yacht? And why did he laugh when she spoke of her poor dead mama? Sophie only wanted to talk to him again. She didn't really mean to stow away - certainly not on the wrong ship. Her unintended quest is to take Sophie far from home, to the pleasure gardens of the Moon, the grogshops and grime of Lambeth Walk, through the perilous Asteroid Sea and the cruel canyons of Mars where Angels fill the red sky with their ravenous cries. Meanwhile on a frozen moon of Jupiter, her destiny waits..