A bigger castle means a bigger library! Everyone's offered to help with a new shipment of books and works to fill up the shelves. However, among the new order lies a small book bound in chains, complete with a padlock. And unbeknownst to the bearers of harmony, the Libro pectus is about to strike! Will they be able to reach their friend(s) in time? Or will they fall to it's power one by one?