Sunset Shimmer casts a spell to switch bodies with Twilight. She embraces the royal lifestyle she's always wanted, but the reality falls short of the dream.
Twilight and Sunset decide to give a relationship a shot, only to learn that the mirror has begun to mysteriously crack. Determined to stop it from falling apart, Sunset returns to Equestria to help. Will they succeed, or have to say goodbye to CHS?
An accident with the Mirror Portal ends up with Twilight stuck as a small pony in the Equestra Girls' world. Her friends can't get over how cute she is.