A mare comes to settle down in Ponyville. She's greeted just like any other pony; with a Pinkie Pie welcoming party. As Pinkie Pie tries to earn her friendship, she finds that this mare possesses a trait owned by no other pony. Now, Pinkie Pie-with the help of Fluttershy and Twilight Sparkle- want to do everything in their power to help her be like every other pony in Ponyville. And that's real nice of them and all, but what happens when that's not enough?