The Merry Mystery

It's Hearth's Warming Eve and all throughout Ponyville, ponies and other creatures are preparing for the big celebration. However, there seems to be a thief among them as things keep turning up missing. Twilight and Pixel head out in hopes to track the bandit while the rest tries to keep things on track for the celebration. However, things take a rather sad turn once they uncover who's behind the stolen treasures during the most important time of the year