In a society where morals are determined by a public opinion system, and social rating is the currency, truth can be a dangerous notion. Sixteen-year-old Rena has few memories of her childhood before adoption. A forest teeming with wildlife. Mountains reaching up to a blue sky. The voice of the man who raised her. The problem-they're not real. Such things don't exist in Esh, a self-governed metropolis shielded from the harsh environment by a transparent canopy. And beyond the city is only the Barrens, an endless wasteland of fog and freezing rain. When Rena's violent instincts save the lives of her friends, her delusional past begins disrupting her prospects for the future. To find the source of her impulses, she'll have to sort through the fragments in her mind. But what awaits is a connection between her true identity, the city's forgotten past, and the secret war being waged beneath the surface of her polite society.