After inheriting a large library of math books, Mr. Ruche, a reclusive Parisian bookseller, encounters a young boy named Max who owns a math-obsessed parrot, and enlists the help of the parrot to help teach Max and his siblings the wonders of mathematics, but soon the group is hurled into a world of danger and must race against time to keep the books safe. Reprint. 10,000 first printing.