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Doona was a jewel of a planet -- a pastoral paradise with rivers, lakes, mountains and seas. The Hrrubans needed it to revitalise their decadent race, to give it back something of the old pioneering spirit. The Terrans needed it as an overspill from the hysterical crowding of Earth, a place to breathe and move without restrictions.

So they both sent a colonising party -- and they both began to think of Doona as Home. And then one day the smooth-skinned, two-legged mammal known as Man came face to face with the furry, four-pawed mammal known as Hrruban...

RETURN TO DOONA...

More than twenty-five years ago, the first Humans had set foot on Doona and had found a beautiful, unspoiled planet ... but they had also found that they were not alone there.

Their early survey had completely ignored or missed the fact that the planet was already settled by the alien feline-like Hrrubans. The ensuing conflict led to the historic Decision at Doona--a social experiment in coexistence between two races, one that had succeeded for a quarter of a century.

Now, that contract between the Humans and the Hrrubans has run out and is up for renewal. Everything that the partners have worked for--the peaceful future of their dreams, the delicate cross-species alliance itself--is at peril and at stake, and could ultimately be lost forever.

FOR THE GOOD OF THE PLANET? OR THE DESTRUCTION OF AN ALLIANCE?

Several years after resolving a crisis of treachery on Doona, the Humans and Hrrubans encounter a new threat to their peaceful coexistence...

The Gringgs are not the first alien visitors to Doona, but they are the first to offer friendship--and a proposal to partake in a trade agreement being drawn up by Doona's leaders. Some are willing to trust the Gringgs; others question their true motives... and a battle of diplomatic unrest ensues.

With Doona's military forces at the ready, the planet once again falls under the dark shadow of uncertainty--and the threat of self-destruction...