So much has changed in Equestria. At least, that's what everypony tells Flurry Heart. Since she has been born, her Aunts and her Mom and Dad have helped to rule Equestria as a safe and tolerant society, where every creature can be themselves freely. Now, as Flurry Heart reaches her eighteenth birthday, she will be welcomed by her family into helping rule their great nation. Everypony expects her to be so happy.... but she isn't. As she has aged, she has dreaded every moment of maturity she's had to endore, wanting to go back to her days as just a young filly blissfully playing the days away in her diapers. When Flurry finds a scroll in the castle library that can alter the world around her, she decides her rule will usher in a new age. An age of her rule as the Princess of Pampers. All characters in the story are 18 and older.

In an alternate timeline, Twilight is actually sent back to magic kindergarten. Celestia hopes this will help her to form a better foundation on her knowledge of friendship, but before they can begin, Celestia has to get Twilight into the right mindset.