Twilight Sparkle's latest spell goes horribly wrong, and she is taken to some alternate universe, filled with two-legged beings. And she happens to be stuck in a place she had overheard them calling "Walmart".
Some secrets are best kept that way. Secret. Especially the secrets of Lilac Heart's family. Treacherous, dark, dangerous secrets. Equestria destroying secrets.
When Celestia messes up a spell big time, a new species of creatures appears in Equestria, along with these odd red and white balls. They seem to repeat their name over and over, and might turn everything upside down, and cause chaos for all.
Myra was a regular unicorn pony, enjoying a calm and nice life in Ponyville. Her special talent was magic, although there was still much room for improvement. All I can say is, it ended badly.
Derpy Hooves always knew she was special, and she never thought much of it, she progressed through life like anypony else. That is, until Celestia decided to show just how special she was.
In another usniverse, Equestria is a modern country. Luna has nothing to do, and needs some friends too. Celestia gets fed up with her intrusion on her work and her complaints of boredom, so she sends her out of the castle, and into the world.