Exterminator ROXY BUCKLES, a bounty hunter-cum-mercenary, lives on Aurora, a highly advanced Earth-2 planet in a solar system on the flip side of the Milky Way. At the helm of Buckles & Associates, Roxy takes down space thugs and alien lawbreakers with relish.

While avoiding Earth on the way home from her last adventure, Roxy receives a distress signal from an area of space she'd thought uninhabited, one she cannot ignore: THE CRY OF THE FALCON. Following it, Roxy discovers a new world of trouble and turmoil that only she can get out of.

Meanwhile, back on Aurora, Roxy's business partner and bestie Suki Kwan is concerned about Roxy's sudden absence and unusual silence. Convinced that Roxy is in peril, Suki gathers together a motley assortment of friends and associates to begin the frantic search. They will soon find themselves in a race against time to track down their missing comrade before it's too late... if they don't kill each other first!