Vinyl Scratch - stage name DJ PON-3 - has it all. A swanky Manehattan apartment, the latest fashions, the hottest music, and a manager who obeys her every command. It's all about her - or so she thinks - but her manager Marble Star has other ideas, and is convinced he needs to help her change her cruel, self-centered party-mare ways. So when the opportunity arises for Vinyl to attend Ponyville's annual Music Festival which is being organised by a group of young musicians led by a cellist named Octavia, Marble signs her up immediately - and the cocky DJ ends up getting more than she bargained for in the small-town celebration. But will it be enough to turn her attitude around?