One day, Twilight Sparkle discovers something amazing about her friend Sunset Shimmer. She's a magical talking pony! This requires investigation! Science! Possibly a full-body physical! Or maybe she'll just ask her what's up with that.

And it contains exactly what you'd expect to find in the wrong thumb drive to lend someone.

It turns out that Sunset Shimmer's final letters to Princess Celestia before her exile were not filled with resentment or remorse. There might have been a lot more frantic running away involved. But it was definitely not Sunset's fault. At all.

Rainbow Dash finally decides to tell her friends that she is gay. This news comes as a surprise to absolutely no one.

Sunset Shimmer takes a day off to help pony Fluttershy and Rainbow Dash take care of animals. Innuendo ensues.

Sunset Shimmer visits the Castle of Friendship, and inadvertently discovers something that Twilight would normally keep hidden under her bed... except that since this is a pony princess we're talking about, it's nothing remotely resembling normal.

Princess Celestia has something to tell Sunset Shimmer about her parents. Nothing strange at all...

Sunset Shimmer tries to explain to Princess Celestia what happened at her CSGU class reunion. And this time everything is very, definitely, not her fault. At all.

Sunset Shimmer's diplomatic visit doesn't go quite as planned. Especially when nudged off the rails by a lot of booze, some minor flirting, and an entire truckload of bad decisions.

Sunset, Trixie and Luna meet in a bar for drinks every week.

Equestria is having a little problem - there are starting to be way, way too many alicorns! Sugarcoat investigates and makes a lot of very awkward discoveries - namely that it's all Cadance's fault. .

Trixie wields mighty artifacts in her assault on Canterlot Castle, to free the town from the tyranny of the Demon Queens!

When ponies talk about Trixie, all they can see is the showmare. So many of them just dismiss her as a braggart and a fraud. They don't know her. They don't know how Great and Powerful she really is.