On the planet Muddletopia, everything looks the same. The buildings look the same and the people look the same. As you might expect, this makes life very confusing! Then, one day, Queen Malvina the Magnificent decides to give everything labels. She believes this will make Muddletopia a much less muddled place to live. So everything - every house, every chair, every blade of grass, every pair of underpants - is labelled. On top of this, every person is ordered to wear a hat with their job clearly labelled on the front. Ten-year-old Karley is not at all happy with her CHILD hat. If only she could swap her hat with someone with a much more glamorous profession. Karley soon gets her wish when the biggest earthquake ever creates the most ginormous muddle of all time.