Glasgow, 1972, and all the coolest kids in town are queuing up for Led Zeppelin tickets. Overhead, a Zeppelin approaches. Its passengers, Jimi Hendrix, Janis Joplin and Hank Williams, think it's worth leaving heaven to see the greatest rock band in the world. Even the fairies are fans. Martin and Greg have overactive imaginations. When they aren't fighting the monstrous hordes of Xotha, they are competing for the attentions of Suzy. But she's not likely to ditch Zed, the hippest boy in the school, for the likes of them, is she? Still, with Led Zeppelin on the way, anything can happen.