The Weed of Earth is a story that takes place almost twenty years after the events of The Children of Earth. The main character is Aura Maria Solis, Estrella Solis's niece. As a result of a dramatic combination of events, she ends up in the colony on Patris, where she meets Gemma, Estrella's daughter. And of course, Raul, Estella's android.
Aura Maria has a problem - her IQ is very low. For this reason, her mother abandoned her, and social supervision tried to take her away from her father in order to raise her up as a manual worker. Her artistic talents were not paid attention to, because in the world of her birth they were of no value. The girl's father bribed officials to look after his daughter. However, he was only allowed to do so until she was 21 years old. The verification commission considered Aura Maria as showing no hope and it was decided to euthanize her. Johnny Solis managed to trick the authorities to include the girl into the colonist transport and so she found herself on Patris.