On National Pranking Day, Big Macintosh had gone through a massive change, becoming a female pegasus. Now that her parents have found a cure, she must look inside herself and realise her true feelings...
As Rockhoof tries to adjust to the modern world, he try's out as a farmhoof on Sweet Apple Acres in which Big Mac did something unexpected to him that Mac doesn't realize.
Big Macintosh has been possessed by Twilight's doll Smarty Pants. To make matters worse Big Mac is content with how things are and wants to feel like a foal again. Its up to Applejack to snap her big brother out of it.
After Twilight delivers a batch of books to Sweet Apple Acres as a gesture of goodwill, she finds that Big Macintosh is not interested in her offerings. Through her efforts to discover why, she inadvertently discovers his most shameful secret.
