Twilight's hiccups were bad enough when they were interfering with her work... Then she made an attempt to cure them, only for another, poorly timed hiccup to botch the spell.
Now her hiccups randomly summon creatures—primarily humans—from other universes... Creatures with absolutely no connection to one another.
Including, but not limited to...
A boy with a silly pink hat...
A super-powered little girl in a blue dress...
A boy with an alien, watch-like device on his wrist...
and a peppy cheerleader carrying a brightly-decorated, blood-stained chainsaw.

Now Twilight needs to cure her augmented hiccups and return these visitors to their respective homes, before the library is flooded with these guests... or the more "raucous" among them decide to stir up trouble, for both Twilight and Ponyville as a whole.

All characters are the property of their respective owners.