Serenity continues the story of the TV series it was based upon ("Firefly"). River Tam had a secret - one in which she's not even aware - so dangerous, no one's safe, as an Alliance operative's ...
He understandably also mentioned Firefly's follow-up movie, Serenity, but his point is made well enough all the same. I would say there are far more people in the world asking that Firefly be ...