This graphic novel follows the rodents Geronimo Stilton and his friends as they travel back in time to thwart the efforts of the Pirate Cats. The Pirate Cats travel back in time to stop Gettenberg from printing the first book, so that they can be the first printers and publishers. Geronimo and his friends go back to Mainz - 1455 and help Guttenberg save his printing press. Throughout the book there are scrolls with factual information about Guttenberg and his printing press printing the first Guttenberg Bible. There is a lot of interesting information spread throughout the book ( )