For fourteen years the Space Star Silver Streak has ranged through deep space searching for planets to colonize. Now the long voyage is nearing its end. The ship is almost empty. If one more planet checks out for colonization, the last of the great space ark's complement will disembark and the long rebuilding of the human race will begin. But the Hyron commander Mordrax, who has ruthlessly pursued the Silver Streak across the galaxy in his mad desire to kill Captain Richard Cameron, has now ascended to the throne of Hyron. As the Silver Streak prepares for what may be its last planetary survey, Mordrax's Hyron fleet arrives on an apparent mission of peace. Could Mordrax be sincere in his desire for an alliance with his old enemy? Or is this a deadly trap that could spell the end of the human race?