After her coronation, Twilight began to realize that adjusting to being treated like a princess was going to be a lot harder than she had first thought. Luckily, somepony had already known that the transition would be hard for Twilight and sent somepony to help her with the transition. Shocked at her old classmate's arrival, Twilight tells Moondancer about how she learned about the magic of friendship from the ponies in Ponyville.
Moondancer and her baby dragon, Bubbles, work together to help Twilight adjust to being a princess, but also to help her understand the challenges and benefits that come along with it. Although, Twilight isn't the only pony who needs a little guidance, as Moondancer and Bubbles discover a secret that lies deep in the heart of the oceans of Equestria.