"Originally published in single magazine form as Firefly: Blue Sun rising No. 0, Firefly No. 21-22"--Indicia.

"Sheriff Mal Reynolds has a new partner--a law enforcing robot from the Blue Sun corporation, who doesn't care about motives, about mercy, about anything other than enforcing the law--no matter the cost. The Blue Sun Corporation has helped to run the universe from the shadows for years, but they're ready to step into the light and take over. If Mal wants to keep his job and protect his sector, the smart move would be to play by their rulebook. But for Mal, there's really one choice--reunite the crew of the Serenity for one last impossible job to save the 'verse. Greg Pak and artist Dan McDaid launch Mal & the crew of Serenity into their biggest war yet, officially continuing Joss Whedon's acclaimed series."--Provided by publisher.