Defended
There's no Doctor here.
The Doctor's in another world, a parallel world. He can't ever get back here, and even if he could, he's got his own universe to save.
So we're on our own.
Cause this world's still got every alien race the other world – my home world – had, and some of them are just as hostile.
But that's okay. Cause now, this world's got me.
See, I used to travel with the Doctor, and I reckon I picked up a few things.
My name is Rose Marion Tyler.
And as long as I'm here, this planet is defended.
