Vinyl Scratch and Neon Lights are the greatest DJs in Equestria, and ever since they first played at the same concert they have been the worst rivals. They argue and throw insults at each other every time they meet, something that their fans seem to approve and even emulate to some extent.

However, an earth pony cellist known as Octavia, Vinyl Scratch's roommate and best friend and an old friend of Neon Lights, suspects that they might not really hate each other, and actually believes there is something else behind their hatred. Unfortunately, whatever it is, only she knows, as not even Vinyl nor Neon seem to know.