Four years have passed since the Rainbooms graduated from Canterlot High. Rarity and Fluttershy are married, while Sunset Shimmer is engaged to Flash Sentry. All of them except Applejack attend Cloudsale University. But when Rarity has her first child, a magical dilemma comes up, and she and the rest of her friends must call upon Princess Twilight once again to deal with the mess.