Man and zor, once sworn enemies engaged in a mutual campaign of xenocide, now live side by side.
The war is over, and Admiral Marais, the legendary "Dark Wing"--both Angel of Death and Species Savior--is long dead, though some of his companions and participants in that great war still survive and have even chosen to live among the zor.
Now a mystery from the past has become a threat to the present when an unholy menace jeopardizes both humans and zor alike.
Whole space fleets have disappeared, with survivors stricken mad.
And now man and zor alike must join forces to meet this adversary head on. . . .