Inkspell (inkheart book #2), Cornelia Funke

Although a year has passed, not a day goes by without Meggie thinking of the extraordinary events of Inkheart, and the story whose characters strode out of the pages, and changed her life for ever.

But for Dustfinger, the fire-eater, torn from his world of words, the need to return has become desperate. When he finds a crooked storyteller with the magical ability to read him back, he sets in motion a dangerous reversal that sees the characters of Inkheart transported to a charmed Inkworld, about to be fought over by rival rebels and princes ... A thrilling and magical adventure about stories and the imagination they inspire.