Greg Pak 
Firefly: Blue Sun Rising Vol. 1 [PDF ebook] 

Sheriff Mal Reynolds has a new partner-a law enforcing robot from the Blue Sun corporation, who only cares about enforcing the law-no matter the cost! If Mal wants to keep his job and protect his sector, the smart move would be to play by Blue Sun Corporation’s rulebook. But for Mal, there’s really only one choice-reunite the crew of the Serenity for one last impossible job to save the 'Verse! New York Times best-selling writer Greg Pak (Darth Vader) and acclaimed artist Dan Mc Daid (Judge Dredd: Mega-City Zero) launch Mal and the crew of Serenity into their biggest battle yet, officially continuing the acclaimed sci-fi series. Collects Firefly: Blue Sun Rising #0 and Firefly #21-22.