Sunset is bored. Discord is bored. What better way to solve their problems than a whacky time travel adventure? A trip to a mysterious era, where nothing makes sense, and everything Sunset knows is called into question. The Nineteen-Eighties.
After developing a new portal that can explore other dimensions, Twilight and Sunset are pulled into an adventure, where they meet even more doppelgängers of themselves. Together they have to save the day, and learn about each other in the process.
As graduation draws near, magic begins to awaken in the human world, drawing out old rivals and opening the doors to new adventures. It's up to Sunset and her friends to keep Canterlot safe, all while dealing with their looming futures.
A very different Sunset Shimmer finds herself in a much darker human world. She's found the power she always wanted, but is power what she really needs?
As punishment for her crimes, the Elements have cursed Sunset Shimmer to do favors for anyone who asks. Lucky her. And then there's that other Twilight Sparkle she keeps running into...
As kids, Twilight and Sunset were best friends, but a tragic accident cut their friendship short. Years later, Twilight investigates the incidents at Canterlot High and comes face to face with what appears to be a literal ghost from her past.