In the future, a spaceship called Serenity is harboring a passenger with a deadly secret. Six rebels on the run. An assassin chasing. When the crew of Serenity agrees to betray to hide a fugitive on their ship, they find themselves in a battle action-packed wonderful relentless military power of a full dictatorship Directors, who will destroy anything - or anyone - to get the girl back and the bloodthirsty creatures who roam the space exploration sector. But, the biggest danger of all may be on their board.