Something went wrong on the alien world, Neftu Prime. Twelve recently created Neftunian's were born killers. They are exiled to a distant world, where they breed with the primitives, creating the bastard species, known as Humanity. But the Humans are just as deranged as the exiles. At first, the Humans are to be destroyed, until Neftu sees value in them. The relationship between Neftu and Humanity continues.