Tilly Pages is a bookwanderer, she can travel inside books, and even talk to the characters she meets there. But Tilly's powers are put to the test when fairytales start leaking book magic and causing havoc. On a wintery visit to Paris, Tilly and her best friend Oskar bravely bookwander into the land of fairytales to find that characters are getting lost, stories are all mixed-up, and mysterious plot holes are opening without warning. Can Tilly work out who, or what, is behind the chaos so everyone gets their happily-ever-after?