A passenger with a deadly secret. Six rebels on the run. An assassin in pursuit. When the renegade crew of Serenity agrees to hide a fugitive on their ship, they find themselves in an action-packed battle between the relentless military might of a totalitarian regime who will destroy anything or anyone to get the girl back and the bloodthirsty creatures who roam the uncharted areas of space. But the greatest danger of all may be on their ship.
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