Zanna and her friend Deeba find a secret entrance leading out of London and into a strange city, an “un London” where all the lost and broken things of London end up . . . and some of its lost and broken people, too–including the boss of living broken umbrellas, a tailor whose head is an enormous pin-cushion, and an empty milk carton called Curdle that adores Deeba. It seems that an ancient prophecy about a hero, written in the pages of a talking book, is coming true at last. But then things begin to go shockingly wrong…