This day was supposed to be perfect! The kind of day that many ponies had dreamed since they were small. However, the queen of the Changelings has hypnotized Shining Armor and plans to use his love to power her and her hoard. Canonically, Twilight and Cadance both made it in time to stop her from actually marrying Shining Armor. But what would have happened if they had been only ten seconds late?...