Once again the Butterfly Migration is here, and Fluttershy can't be any happier. She is even more happy to find out Pinkie is throwing a party celebrating it! When Pinkie Pie comes over to give her a invitation, she couldn't help but notice how weird she acted. Stranger than normal Pinkie. Curious, Fluttershy goes to Pinkie's party and watches her. What is in store for these polar opposites?