Thirteen-year-old Juan’s summer is off to a terrible start. First, his parents separate. Then, almost as bad, Juan is sent away to his strange Uncle Tito’s house for the entire holiday! Who wants to live with an oddball recluse who has zigzag eyebrows and lives inside a mysterious library? As Juan adjusts to his new life among dusty shelves, he notices something weird: the books move on their own! Uncle Tito lets his nephew in on a secret: Juan is a Princeps Reader, which means books respond magically to him, and he’s the only one who can find the elusive, never-before-read Wild Book.