While showing the gang how to play marbles, Dorothy unleashes Ozma's chaos stone, which, well, cause a lot of chaos! While recovering them, Ozma tells Dorothy that she's hosting a royal ball. Never having been to a ball, Dorothy is worried. Plus, she has to wear something. So, all this happens:
This was a fun one, in that we see a bunch of people from around Oz, and get hints of what else they've mined from the books, even if Baroness Bunchausen of Bunbury isn't an actual bun like she would have been in The Emerald City of Oz. And King Glum of Merryland? Inspired! Despite the dress and the chaos stones, Dorothy's sweet self wins out in the end, and helps improve relations in Oz as well. Which is exactly what we'd expect from any version of Dorothy, right?