Rose Tyler, a shop girl from London, stumbles across a mysterious individual called The Doctor. She tries to help as he seeks out the Nestene Consciousness, an alien who is controlling living plastic in an attempt to take over the world. "Really tho Doctor, who are you?" "You know like we were saying, about the earth revolving. It's like when you a kid, the first time they tell you the world's turning and you just can't quite believe it cause everything looks like it's standing still. I can feel it. The turn of the earth. The ground beneath our feet is spinning at a thousand miles an hour and the entire plant is hurtling around the sun at sixty seven thousand miles and I can feel it. Were falling through space, you and me, clinging to the skin of this tiny little earth and if we let go. That's who I am."