The colonists on Talanta, man's farthest reach into space from Earth, strive to continue the human race after a plague has left only males alive. A race of slaves is created, the Nakeds, who are unable to resist any order given them by their masters, the Freemen. Many of the Nakeds are worked to exhaustion and made to perform any sexual service their masters desire. Some colonists, refusing to accept slavery and unable to stop it, escape to a tropical forest and form their own settlement. The Nakeds are left completely at the mercy of their masters. Until an act of nature serves to reveal the closely held secret of their total obedience....