Disclaimer: I own neither Firefly nor Doctor who...If I owned firefly that baby would be back on the AIR!
"Its a beautiful planet, it really is! The Doctor yelled to the Ponds, who stood by the console calmly."Waterfalls falling from nothing! nobody knows how they work and nobody relly cares!" The Doctor twirled but Amy eyes the door suspiciously,
"Yea, but are you sure you got it right this time?"
"Of course I did!" The Doctor smiled and then swung the TARDIS doors open to a gun pointed into his face, "oh..."
"Mind tellin' me how you got that gorram thing on my ship?" The man behind the gun said, and all three of the time travelers intantly noted his American accent, and the fact that there were two other people (also with guns) standing behind him.
"Ah...well... that might be a little hard to explain..."
"Well then, start talkin'" the shorter man said, the one with shorter hair, a beard, and much more frightening appearence.
"Oi! Wait a minute!" Amy called, running down the ramp "where are we?" The woman, third with a gun stared the redhead down calmly and said,
"This is Serenity, and you're in space"
A/N: Yes, I know it's short. But I wanted a dramatic ending... plus I didn't want to get into plot development just yet.