In a last-ditch effort to stall his boss, O'Malley decides to take a randomized batch of villains residing in a randomized alternate dimension and throw them at her. Lucky for him that his boss is actually looking for something to fight.
Otto gifts a sick Olive a Pinkie Pie plush, life-size for extra cuddles. Seems like a good gift...if the name of the marketable plushie didn't clash with a phobia of hers.
In two separate worlds, Pinkie Pie begins to lead two separate lives: one as a human, the other as a pony. But her newfound life as a human is filled with far more complications than the one she's accustomed to as an equine.
Rainbow Dash has a very special interest in a franchise called "Heavenly Healer". She thinks her friends don't know. Unfortunately, she overlooked her choice of clothing.
Haruko has visions of the two alicorns who will aid Mandy in her fight against Vallea. Although unfamiliar with the world, she sets out to Equestria to seek them out.
Forced to remain grounded after a nasty crash, Rainbow Dash goes to live with Twilight and ends up experiencing the joys of lawnmowing on land instead of in the sky.
A portal mishap causes Starlight to wander into a world where she is mistaken for a human that got turned into a pony. This, of course, presents some complications...and a lot of ire on her end.
Apple Bloom meets somepony who's just as much into potions as she is, and soon becomes enamored with her to the point of not allowing anything but perfection in her work. She ends up learning a lesson she'll never forget.
Scootaloo, the second alicorn of Ponyville, seeks to increase her flying skills so she can see Cloudsdale for the very first time. What she gets is a whole new way to fly.
After a sugar binge that destroys Sugarcube Corner, the Mane Six try and get Pinkie Pie to eat something other than confectionaries. Hilarity, denial, and one stomach destroying an entire building follows suit.
A catgirl exile from the village of Vallea meets a long-lost relative who works for Odd Squad. She must adapt to her new circumstances while also avoiding capture by Vallea's king.
How Odd Squad agents interrogate those...utterly confusing, but magnificent, unicorns. Particularly one elegant and graceful one who will not let up and threatens to sap away the sanity of an agent herself.
Cozy Glow is freed from her stone prison, at the cost of landing in a new and unfamiliar world. As she hears the stories of six kid villains who went through their own rises and falls, she finds that her circumstances might not be so bad.