Passage to Avalon

"Thirteen-year-old Sam Shelton is the only person in Avalon who can't use the magical power of aether. He's also the only person in Avalon with a bag of high-tech spy gear, a solar-powered cell phone with intermittent signal back to Earth, a YouTube account, and a murderous wizard-emperor on his tail...so he's got a lot going for him. When an earthquake hits his hometown of Bozeman, Montana, Sam gets inexplicably transported to Avalon, a strange world in which aether defines all aspects of life: the rich, the poor, the weak, the powerful, the oppressed, and the oppressors. Sam soon discovers that not only is he immune to aether's magical effects, but that he possesses the rare ability to destroy the stuff on contact. This phenomenon poses something of a major concern for the Emperor of Avalon, a tyrant who has dedicated his life to amassing more aether than all his subjects combined. While trying to find a way back home, Sam learns that his best hope lies with meeting the emperor head on, and draining the tyrant of his power. To do that, Sam will need to band together with a medieval cowboy, a young aether prodigy, and a curious dryad, all while using his whole bag of technological tricks...and posting about it on social media, of course."--Publisher's description.