Polly Socks is aunt Amethyst's little filly and thus, Pinkie Pie's cousin. Pinkie's goal? To impress the hay out of her and become best buds! We delve into Pinkie's inner world as she and Polly get to know each other and their quirks that aim to do one of many things: make the world a happier place. They talk about their relationships with their relatives, share stories, learn from each other and more importantly, have fun and make the most of it every day!