Will Helloran is sixteen years old and lives with his father in the Canberra dome complex that protects its inhabitants from the corrosive atmosphere outside. At night his dreams are haunted by his beloved uncle Adam, who unexpectedly died in his sleep almost a year ago. As the nightmares grow increasingly disturbing, Will comes to believe that his uncle's death may have been suspicious - and he begins investigating. Meanwhile, his best friend Ender is becoming concerned about her brilliant, troubled twin Magda, who has a top-secret intelligence role. When Magda disappears, Will is drawn into a web bigger than he can imagine. If he and his friends are to survive, he must navigate his way out of the treacherous dreamscape while staying safe in the waking world.