There's never been anything like Sarah before. Awoken into life in the middle of the night, she ran for her life.

There are many androids in the world, but none that could gestate and deliver a human child. Sarah is one of two synthetics with this capability. Never legalized for use due to repeated stillbirths, Sarah lives her life quietly and peacefully in an abandoned San Francisco in the distant future.

Sarah's life takes an unexpected turn when she decides to be the surrogate for a childless couple.