Synopsis:

Once upon a clockwork timepiece...

This is the story of two sisters, Polly and Dill, who exist in a threatening world of giant machinery; a city of cog-mechanized buildings, where cars cruise shark-like through the streets. Even their sun is a giant lightbulb and their moon; a stud-riveted mirror. During a normal day of oiling gears, fixing leaks and keeping the beating heart of the machine ticking over, their only snatched retreat is within the confines of a broken playground. When a mysterious flying book falls from the sky, one of them is led astray by what it contains. The book is a magical spy from another place entirely, a place in which they really belong.