Our spacefaring heroine may have been enlisted by Earth's underground, but that doesn’t mean she trusts her new allies. On the run in an alien city, hunting for a doomsday device that might end a war, Barbarella has to choose a side and stick to it. But it might not be the one you expect...

To stop a war a planet must fall. For Barbarella the ends don't justify the terrible means, but if she acts to save billions of innocents it may spell defeat and disaster for Earth. Oh, if there were only another way…

Barbarella’s never ending quest to repair her ship’s regulator and be on her way takes a detour to Falladim, where there’s a rush on for R.U.S.T.—Radically Unstable Space-Time! The rarest and most valuable stuff in the universe, even Barbarella can’t resist its mighty call. But competition brings out the worst in humans and aliens alike, and the Siren of Space is about to see what the worst really is!

The great R.U.S.T. rush has pitted Barbarella against fellow prospectors, the Glain family as the old west meets the final frontier (and please, no “Cowboys and Aliens jokes)! With an inconceivable fortune at stake the fighting is getting dirty, and Barbarella finds herself on the defensive in a maze where time and space have no meaning! But the heart of the maze is stranger still...

Barbarella is lost in a maze of Radically Unstable Space-Time, with Pulver Glain, his boys, and his smarter-than-smart gun Sally-Anne hot on her trail. But what's at the heart of the maze is a threat - and a miracle - that none of them are ready for.

Barbarella has a corporate target on her back, and only the arrival of an old friend can save her bacon. But the mistress of the spaceways whose heart belongs to no one is out of the frying pan and into the fire—literally! For her latest adventure has her headed for the heart of the sun!