Starlight Glimmer, after spending Hearth's Warming in Ponyville, goes to the Crystal Empire to spend the New Year with her old friend, Sunburst, for whom she has also secretly has feelings. Can she tell him how she feels?
Starlight travels with Sunburst to an old abandoned unicorn settlement that predates the ruling era of the Two Sisters. They're searching for ancient lost spells but something "bad" happens to them.