Sad Story is just a normal pegasus pony. That is, until she is chosen to become the apprentice of Cadence, the Princess of the Crystal Empire. Without the ability to use magic, Sad Story thinks she isn't fit to become a princess's apprentice. She runs away, but when the Empire is in danger, will she have the courage to return and fight by her teacher's side? Or will she fail to ever fulfill her role as an apprentice?