Beyond the huge domed roof of Ash Harbour, a city built inside a hollowed-out mountain, deadly storms and Arctic temperatures have stripped the Earth bare. Resources are limited and access to power is all-important. Sinister bodies reign supreme, undercover operations are rife and every move is monitored by the Clockworkers and Dark-Day Fatalists. When sixteen-year-old Sol Wheat's father goes missing and is accused of murder, Sol sets out to find out why, and in doing so uncovers the harsh reality behind Ash Harbour.