One sun, two separate worlds. Aida is a sub, or a human who has not been genetically enhanced. She lives in the Old World with her grandfather on his dairy farm. Her fate would dictate that she should become a dairy farmer, her luck takes her elsewhere. On the other side of the Old World and separated by The Wall stands The New City, home to a generation of genetically modified teenagers. Young, beautiful and talented - but no-one from the Old World has ever met them. Aida thinks she's bright but she has no idea of her true capabilities...