Howls Moving Castle by Diana Wynne Jones

Deciding she has nothing more to lose, Sophie makes her way to the moving castle that hovers on the hills above her town, Market Chipping. But the castle belongs to the dreaded Wizard Howl, whose appetite, they say, is satisfied only by the souls of young girls…

There Sophie meets Michael, Howl's apprentice, and Calcifer the fire demon, with whom she agrees a pact. Her entanglements with Calcifer, Howl and Michael and her quest to break her curse come alive with Diana Wynne Jones's unique combination of magic, humour and imagination.

Book by Diana Wynnes Jones.