Applejack and her friends has noticed that their best friend Rainbow Dash has been acting a little different lately. She seems actually happy to come to school!
While the other girls brush this change off, Applejack gets even more suspicious when she sees that her brother has been acting different as well!
Trouble ensues as Applejack is determined to find out what is causing the changes in her friend and her brother, and wonders if the changes could be related with one another.