Princess Celestia has recently noticed that apple production in Ponyville is at a rate in which she has no control over, and that so many apples being sold at such low prices is disrupting the flow of commerce. In order to maintain control over the everyday goods and services the ponies of Equestria require, Celestia orders her apprentice Twilight Sparkle to disrupt the flow of apple production in the only way she knows how. Violence.