After learning about a rumored "Perfect Cupcake", which is the best tasting cupcake in the world, Pinkie Pie sets her sights on creating one. After three days of searching, she finds no leads and begins to lose hope. Just then, she receives help from a mysterious mare that appears in Sugar Cube Corner's basement. This is the story on the creation of the cupcake, which to Pinkie's surprise, is a lot hotter then she hoped for.