When a mysterious plague strikes Ponyville, everyone is faced with a challenge that defies one of the very principles on which their society is built. To which degree are ponies defined by their cutie marks?
Pinkie makes ponies happy. That's no secret. After all, that's what her Cutie Mark means, she was destined to do so. But Rainbow Dash has a question: how does she do it so easily?
Facing starvation in an endless winter, the young filly Celestia attempts to raise the sun... and finds a wonder that her cynical mind had never conceived.
Starlight doesn't feel like she's home. She really doesn’t know her place even with her new friends. Until one snowy night, she talks with Twilight on the castle's balcony.