ELDANE: We lived on the surface of the planet long before you did. Our sole purpose has been to return to our rightful place.

NASREEN: And we've got a planet that can't already sustain the people who live there. And you want to add a whole other species to drain resources

ELDANE [OC]: As I sat there that day across the table from the humans, the future of both species and of our beloved planet Earth rested in our hands. But as the discussions went on, I began to despair about whether we would ever find any common ground. As ambassadors for our species we all had too much to lose.

AMY: So, what about the areas that aren't habitable to us? Australian outback, Sahara desert, Nevada plains. They're all deserted.

NASREEN: Yes, fine, but what happens when their population grows and breeds and spreads? And anyway, what benefit does humanity get, and how will we ever sell this to people on the surface?

ELDANE: If I could get a word in, maybe I could tell you. You give us space, we can bring new sources of energy, new methods of water supply, new medicines, scientific advances. We were a great civilisation. You provide a place for us on the surface, we'll give you knowledge and technology beyond humanity's dreams. If we work together, this planet could achieve greatness.

NASREEN: Okay. Now I'm starting to see it.