In order to contact Princess Twilight Sparkle of Canterlot High's new students, The Dazzlings, Sunset Shimmer reveals to her friends, a magical item that is capable of sending written messages between the two worlds. Pinkie Pie had always wanted to have a pen pal, and what better person to talk to than your(other worldly)self? Of course, as usual with anything Pinkie Pie does, shenanigans ensue.