Greg Pak 
Firefly: Return to Earth That Was Vol. 1 (Book 8) [PDF ebook] 

NEW CHARACTERS! NEW ENEMIES! A NEW ERA STARTS HERE! For the FIRST TIME, it’s the most-demanded Firefly story ever, as the series jumps forward in time after the battle with the Reavers that left Wash & Book dead. Serenity soars again, with Kaylee captaining a crew including River, Jayne and the bandit Leonard Chang-Benitez. But they’ll soon find themselves drawn into a shocking conflict that means Zoe — along with her toddler Emma — and old friends must rejoin the crew…except for Mal Reynolds. The superstar creative team of Greg Pak (Star Wars), Pius Bak and Ethan Young send Serenity off on the last mission they ever expected, one that will bring them to the EARTH THAT WAS for the first time in Firefly history!