In un universo popolato da entità fredde e oscure come lo spazio profondo stesso, a bordo della Serenity (piccola astronave di classe Firefly) si ritrova un mal assortito equipaggio di mercenari, fuorilegge e fuggitivi. Tutti alla ricerca di un lavoro, un qualsiasi lavoro, che permetta loro di guadagnarsi l'unica cosa che desiderano veramente: un po' di pace.
Serenity: Better Days follows everyone's favorite space cowboys in a thrilling, action-packed adventure, where Mal and his crew take on a heist that promises a big payoff. But when one of Serenity's crew is taken captive and tortured, the gang must put their enduring differences aside and work together to save one of their own, even if it means losing the cash prize of a lifetime! Joss Whedon returns to the world of his blockbuster film Serenity, reuniting with Brett Matthews and Will Conrad, his collaborators on the bestselling 2005 series Those Left Behind.
Nursed back to health by Tonto after an ambush leaves him injured, John Reid transforms into the Lone Ranger and, with the help of Tonto, exacts a new brand of justice on the Old West.