Five hundred years in the future, Earth is a paradise... without us. The Earth was dying, and only the Erta could save it. Created by humans to be genetically superior, hyper-intelligent and unburdened by the full range of human emotions, they succeeded by removing the cause: the human race. Years later, the Erta are faced with a dilemma - should they reintroduce the rebellious and violent Homo Sapiens to the Earth? And if they...