Hold on to your gorram butts, there's a new adventure coming for the "Firefly" crew of Serenity. 

Boom! Studios and 20th Century Fox Consumer Products will release a new graphic novel set in the "Firefly" universe of Joss Whedon's science fiction TV series this fall. Dubbed "Firefly: The Sting," the book promises to be a caper to remember. 

Here's the official synopsis: 

"Saffron — the enigmatic rogue who captured the hearts of Firefly fans worldwide, as well as the heart of Captain Malcolm Reynolds — returns to the Serenity. But this time, she's got no time for Mal, as she's there to recruit the women of the ship to join her on a heist that has personal stakes for all involved. The cunning grifter joins forces with Zoë, Inara, Kaylee, and River to pull off the greatest theft in all the 'verse! What could possibly go wrong?"