It has been ten years since the loss of Ponyville, and three of the survivors have formed a make-shift family all their own. But on this Hearth's Warming Eve, the fourth of their number is finally coming back into their lives. She has a story to tell about a trip she took the holiday prior, when the cold winds blew and the bells did ring. When the ones left behind wept and laughed in endless, frozen agony. When the figure of her nightmares returned for the one who had escaped him so long ago...