In some far-flung corner of the cosmos, habits of local physics may differ from the laws we know.
No surprise then, when one day some lawless, novelty-seeking thing from out there finds a way to Earth.

Six years after comet Lihtan swerves past planet Earth. . .
Doc had thought her battles with the revolting Uni invader were behind her. But now, in defense of her beleaguered 9th Amendment Republic, Doc Holiday is asked to volunteer--yet again--to run battlefield rescue operations within the comet-affected zone, home to the young Republic.
And this latest Uni assault into the zone looks to be the most insidious of all !
Plunged into conflict with unsavory minions of a corrupt and hapless empire, Doc and a handful of allies run up against a maniacal plot to hijack the alien physics at the heart of the Republic.
Allied defenders quickly gather for all-out war against the invader--while Doc struggles within a mercurial domain of unknowable cosmic forces where faulty assumptions can quickly turn fatal.
And here she must discover how to control these enigmatic forces--
Or else the mind-bending Unitary scheme will deliver a strike that could forever stuff all of humanity into the Uni empire's grubby back pocket.

"A delightfully offbeat tale of a dystopian world. . ." --Kirkus Reviews