With Earth no longer habitable, Androids begin a new life on a distant planet.
Mother receives surprising guests with evil plans, and the question grows about the possibility of the existence of inhabitants other than humans and androids on the planet.
Campion suspects that Mother is poisoning the Mithraic kids, after they fall ill, and plans to run away.
Father is trying to make the children learn how to hunt some strange creatures on the planet in search of food.
Marcus devises a plan to save the Mithraic children, but first he must locate them, while Mother tries to learn more about her origins.
After reviving her bond with her maker, Mother finds herself overwhelmed with strong emotions she never knew she was capable of feeling.
Marcus's decisions strains his relationship with his family as he struggles to maintain his influence as leader of Mithraic, while Mother sees him for what he is.
As Marcus continues his endeavors, Sue fears that he may no longer cares about her and Paul.
Sue is adamant to protect the children, and in doing so struggles with whether or not Mother can be trusted.
Paul exhibits alarming behavior that leads to a revelation, while Father struggles with human-like feelings.