Sunset Shimmer has had a lot on her mind. So, naturally, things get a little complicated when she wakes up after having had sex with her world's Twilight Sparkle the night before.
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.
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...