Spike wasn't too happy to be told yet again he was too young to partcipate by Twilight and her friends. He enlists the help of the two local humans, Quinn and Zack, to get a little vengeance on them. A 'borrowed 'potion from Zecora suceeds in making the group young again- even younger than the 'baby' dragon himself. Unfortunately, the potion they'd brought to undo the effects of the first does nothing to remedy the problem. And with Zecora out of town, they can't figure out how to fix it.
Worse still, the potion's effects continue to de-age the afflicted ponies. Can Spike and his friends find a way to stop it before they 'foalify' to nothing?
(Character list may be added to as story continues, but unlikely any removal.)