Wiggles Kingdom also known as Wiggles World - where all the Wiggles (both OG and current) are living in this magical and wiggly place with their family and wiggly friends - Captain Feathersword, the friendly pirate, Dorothy the Dinosaur, Henry the Octopus, Wags the Dog and their new friend, Shirley Shawn the Unicorn. It's a big occasion in Wiggles World because, Greg's only child and heir apparent, Kate, is set to be the new ruler once Greg steps down after 25 years of ruling. Months before her coronation, Kate's world turns around as she and Greg welcome the new consort, and her two children into the wiggly fold. She doesn't mind her new family, but Kate is struggling with her new step-siblings. So, to get her old dad to have a "proper rest, " she sets up the plan for the four of them to go on a vacation while Kate stays behind to pick up where her parents left off.