Shadow Sun Seven continues Spencer Ellsworth's Starfire trilogy, an action-packed space opera in which the oppressed half-Jorian crosses have risen up to supplant humanity. Jaqi, Araskar and Z are on the run from everyone - the Resistance, the remnants of the Empire, the cyborg Suits, and right now from the Matakas - and the Matakas are the most pressing concern because the insectoid aliens have the drop on them. The Resistance has a big reward out for Araskar and the human children he and Jaqi are protecting. But Araskar has something to offer the mercenary aliens. He knows how to get to a huge supply of pure oxygen cells, something in short supply in the formerly human Empire, and that might be enough to buy their freedom. Araskar knows where it is, and Jaqi can take them there. With the Matakas as troops, they break into Shadow Sun Seven, on the edge of the Dark Zone.