When the renegade crew of the spaceship "Serenity" agrees to hide a fugitive on their ship, they find themselves caught between the relentless military might of a totalitarian regime and the bloodthirsty creatures who roam the uncharted areas of space.The movie " Serenity " is the continuation of the tragically canceled 2002 TV show " Firefly ," from the mind of Joss Whedon, creator of " Dr. Horrible's Sing-Along Blog " and "Buffy." Even now, many years later, the show's fanbase is still growing ... and still flyin'.