Mia misses her Daddy. Without him, Christmas has lost its magic. But when Mia discovers a world within a mysterious post box, she is whisked away on a truly wonderful adventure over sparkling seas and streets of paper stars. But what will Mia find at the end of her journey? A magical tale of love and adventure, brought to life by peep-through pages, lift-the-flaps and breath-taking illustrations from Karl James Mountford ( The Curious Case of the Missing Mammoth ).