Sunset Shimmer is just struggling to recover from the Fall Formal and just trying to make means meet. However, the others, unaware of her financial situation her friends consider her a Scrooge for not donating to the school's food drive. However, during a Christmas Assembly, Sunset Shimmer's former caretaker shows up with a promise to send the school three spirits to show them why Sunset Shimmer wasn't a Scrooge.

When Princess of Friendship Twilight Sparkle leader of Equestria wakes up to find herself a unicorn and Princess Celestia's prized student once more she must figure out how to get back to her time and how she was sent back, however her quest to return to her time is interrupted when she realizes that she returned the day she moved to Ponyville and if she doesn't make friends with her friends Nightmare Moon will take over.
Can she reform her friendships, find out what's going on, and get back to her own time?

Twilight enters her library to find Pinkie Pie reading a geology book and telling Spike facts about rocks While Maud, Pinkie's older sister, is literally bouncing off the walls begging to go get cake. Twilight is determined to find out who is responsible for this body swap but she isn't prepared for the culprit.