It's Sunset and SciTwi's first Grand Galloping Gala as a couple. With every other Gala in the past few years having been awful and destructive, someone is intending to make this Gala the Best Night Ever...by any means necessary.
Too much of a good thing is filling the human universe, and Sunset Shimmer is the only one who can solve the problem before it annihilates her new home.
While exploring Canterlot Castle, Pinkie and Rainbow Dash uncover a room filled with stone tablets connected to dials. Above each dial is the name of an alicorn. These couldn't possibly control an alicorn's power, could they?
Battling Starlight Glimmer, Twilight finds herself in another alternate timeline. Only this time, she finds herself in the Golden Oak Library with the Princess of Friendship: Sunset Shimmer.
A conversation with Applejack spurs Fluttershy to check up on Twilight's mental well-being. Twilight's reaction to her encouragement, however, is probably not what she had in mind...
Wallflower overlooked something...or someone...when she started erasing the memories of Sunset Shimmer. He was able to help Sunset when no one else was able to help.
Discord and Bill Cipher once traversed across dimensions, leaving a trail of absolute chaos in their wake. A 1000 years have passed since then, and Bill never forgot about that bet they both had made all those years ago. (Gravity Falls crossover)
Twilight Sparkle and friends spend a peaceful evening together playing cards. That is until their future selves decide to show up to stop them all from ruining their lives.
During what started as a perfectly fine Lunch, Twilight learns that her friends have somehow gotten it into their heads that she is in a relationship with her mentor and idol Princess Celestia.
Trenderhoof wants to write about a truly exotic locale, Twilight wants to explore new kinds of magic and Dash just wants an adventure. Then Discord's offers to show them around his dimension, it's a match made in Tartarus!
Cheese Sandwich returns to Ponyville to plan a party for Pinkie Pie's birthday. But Pinkie suspects Cheese has another reason for coming back on short notice, and why does he seem to be acting so weird around her?
Princess Cadance and Prince Shining Armor ask their mutual bedmate Chrysalis to bring them coffee. What they get seemingly defies the laws of known physics and is likely unfit for consumption. This doesn’t stop them.
Lyra thinks Discord is an idiot for not thinking to dodge when the Elements of Harmony were about to strike him. Discord thinks this is the perfect opportunity for a game.
As Twilight attempts to get Starlight Glimmer to see the error of her ways, Spike can't help but interject. If Starlight had a portal to take her to any place or any time, why fixate on one single event when she could accomplish so much more?
Starlight Glimmer assembles the townponies of... the town to finally pick a name for the village they all dwell in. However, finding a name that does not promote any form of inequality proves to be harder than she imagines.
If there are three things Principal Celestia can't stand, it's paperwork, princesses and her past. Unfortunately, the first makes up her job... and she desperately needs the second to help her resolve the last.
Having grown tired of seeing ponies worship the very ground that the Princesses walk on, Discord decides that it's high time ponies started worshiping him instead.
Running low on pages to talk across the dimensional rift, Twilight reads what might be Sunset’s final message to her. However much to Twilight’s surprise, there’s also another message to a different pony.
Rainbow Dash writes a novel and challenges Twilight to proofread it. Twilight accepts the challenge and gets to work. However, the story turns out to be really bad. What will happen during this short adventure?
Discord decides it's about time that the mane 6 met his old friends. What will happen when the defenders of Equestria meet the crew of the Starship Enterprise?
This story was written not long after the first Equestria Girls and long before Rainbow Rocks. So considering a bridging between the two. Or at least my best guess of what may have happened between the two movies.