City moving on tracks

Many thousands of years in the future, Earth’s cities roam the globe on huge wheels, devouring each other in a struggle for ever diminishing resources. On one of these massive traction cities, the old London, Tom Natsworthy has an unexpected encounter with a mysterious young woman from the wastelands who will change the course of his life forever.

Sophie, a young milliner, is turned into an elderly woman by a witch who enters her shop and curses her. She encounters a wizard named Howl and gets caught up in his resistance to fighting for the king.