When an elemental phenomenon with mysterious abilities returns after many millennia, it threatens Equestria with its presence. But it's soon discovered that only one pony can rid the land of this terror.

The feat will prove much easier said than done, as The Mane Six and company may realize defeating this enemy may come at a terrible price.

(Timeline of this story: Set during mid Season 6)

Trixie & Starlight Glimmer have always spent Hearth's Warming Eve together since they've become friends. But when Starlight becomes ill before their upcoming Hearth's Warming Eve trip, Trixie must face with the truth that she may have to spend the holiday alone. Sadly, for Trixie this wouldn't be anything new. Will Twilight and the rest of the Mane Six be able to give Trixie a "Great and Powerful" Hearth's Warming Eve?