Sunset Shimmer and Twilight Sparkle have a few drinks together... Okay, maybe more than a few. This is followed by a desire to do some science. This simultaneously goes much better and much worse then the girls would have expected.
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.
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...