The Great Gathering, the unimaginatively titled... gathering where characters from all over the known fictional universe come together to share their cultures, ideas, food, or even just to hang out. To the joy of the Mane Six, they have been selected by Celestia to attend this once-in-a-millennium event. Much to their delight, they discover that they can set up food and drink booths. Twilight, Rarity and Fluttershy settle on lemonade. Little do they know, a certain group of sparkly vampires have also decided to set up a lemonade stand and the competition gets more out of control than any of them could have possibly imagined.