A casino opens up in the humble town of Ponyville and the mane six decide to try it out. Of course, the result of going to the new casino has left all six mares with less bits to their names; but Twilight Sparkle seems to have gained an interest in the games of chance, they do involve one of her favorite subjects after all. Surely nothing can go wrong when a smart mare such as Twilight Sparkle, Element of Harmony and librarian extraordinaire, tries a hoof at just a few games based on probability, right?