In an AU where Cogs just began their attack on Toontown, Flippy finishes the completition of the Dimensionator, a machine that can link the universe of Toontown with any other. 7 humans go through the portals and agree to help fight back the Cogs, but when the Dimensionator is destroyed, it becomes a mission to return the kids back to safety before it's too late.

Countless years ago, long before Discord plunged Equestria into his tyrany, a unicorn by the name of Star Swirl the Bearded had created perhaps the most ambitious of spells yet know to ponykind: being able to tamper with one's destiny and becoming an alicorn. What that pony didn't know, however, is that destiny is not something you can change without a bit of... chaos.