When Applejack and Rainbow are sent to the Equestria Girls universe to solve a friendship problem, it seems the ones with the problem to solve are...themselves?

Applejack always wears a hat. Always. But it can't be because her hat is special to her, not if she has a whole closet of of them. So why does she always, always, always wear a hat? Rainbow Dash is determined to get to the bottom of it...