ISBN-13: 9780192742711 / Angielski / Miękka / 2017 / 208 str.
When Nelly returns home to find that her mother is missing, she has only one option: to fly out in a knitted hot air balloon with her best friend, a turtle called Columbus, and rescue her! She may be looking for her mother, but what she finds along the way is not what she was expecting ...