Art Axis is a devil in Equestria that tries to be good. He doesn't always manage it.

Prince Blueblood was captured by the changelings in the wake of the Canterlot Wedding. But the pony who was freed was Dawn Coyote, knight errant! With his trusted squire Sancho (who is a rock) and the lady Rosie Nan he shall rid Equestria of evil!

For decades, Equestria has been living in the golden age of rock. But just who started it, and why?