Set in a post-apocalyptic world, the novel presents a future where Earth's life has been greatly damaged by a nuclear global war, leaving most species extinct. The remaining human population has been encouraged to emigrate to off-world colonies to preserve the human race. Those who remain on Earth are tasked with maintaining the ecological balance by owning and caring for animals, replacing extinct species with mechanical replicas when necessary. The story revolves around a bounty hunter, who is tasked with "retiring" rogue androids that pose a threat to humans, and his emotional and moral struggles as he goes about his work.

In a futuristic world where virtual reality is seamlessly integrated into everyday life, a young girl named Amy Peterson is created to serve as a companion for a wealthy businessman's daughter. As Amy navigates the complexities of her existence and develops her own consciousness, she must confront the moral and ethical implications of her existence and the blurred lines between reality and virtuality. With thought-provoking themes and a captivating narrative, this book explores the nature of humanity and the consequences of advancing technology.