They're back! And this time, they're a team in more ways than one! As Mr. and Mrs. Santros, Jules and 'Manda Mooney are now both science agents for the Terran Consortium's Military Intelligence. Join them on their toughest mission yet as they first become targets for murder then split up to find out who or what is behind a series of missing space freighters, the destruction of a Navy battleship, and a self-repairing spacecraft housing what may be a new form of life. When their paths finally reunite, Jules and 'Manda discover that the dangers they've faced individually, pale in comparison to the one they both must now face together: one that threatens two star faring civilizations and aims to make mankind in particular, extinct!