Celestia encounters problems when Queen Chrysalis tries to take over Canterlot again, and she is forced to use her failsafe on all ponies in the room. Well, two Alicorns, a Draconequus and a changeling.
In order to destress, Princess Celestia takes a potion that allows her to briefly be a child again. Could Discord, Sombra, and Chrysalis possibly benefit from the same procedure?
On the eve of Nightmare Moon's return three royal guards were transformed into toddlers. Celestia now has to raise these three foals and keep them in line.
Luna wants to go trick or Treating but Celestia is emberassed and decides its about time they stopped. Frustrated Luna turns Celestia into a foal and now has to care for her during the festivites.
Discord, Nightmare Moon, King Sombra and Queen Chrysalis have been reduced to foals and placed under Princess Celestia's carful gaze and she does her best to keep the four out of mischief.
Moondancer has been accidently turned into a foal by Twilight. Now she has to find out what spell she used to turn her best friend back into a adult. Meanwhile Minuette becomes her new mom.
Sunburst is Flurry's foal sitter while Cadence and Shining go out on vacation. While as a foal he and Flurry Heart become seperated and the two go on journey to be reunited.
Tired of how Daring Do always thwarts his plans and overcomes his deathtraps, Ahuizotl devises a plan that is sure to not fail in eliminating his nemesis once-and-for-all