Twilight Sparkle was many things: A teacher, a student, a mage, a hero, and a friend. With the coming of the Winter Solstice, the threat of destruction follows in its wake. The stars align, and it may just possibly be the end of Ponykind.
With a break-in at the library and subtle occurrences making their way across Ponyville, Twilight searches for the both the cause and the way to end it. Whispers in the dark point her in the right direction, but sometimes the answers aren't as straightforward as one would expect.