As Rara struggles to find her place in show business after the Ponyville concert, she realizes that the best solution may lay with Sapphire Shores. After all, who says there has to be only one Pony of Pop?
Sapphire Shores is haunted by her mother's whispering voice. Her dreams are filled with letter after letter, all asking the same question. It isn't until the mail catches up to her tour that she learns why.