Fic ponderings

I had an idea pop into my head as I was watching The Fifth Element just now (best movie ever, and anyone who says differently is a damn liar). Specifically, when the enemy is destroyed and is now in earth orbit and looks like a second moon. It made me wonder if it implies that earth's moon is itself a previous evil that got spanked. I love those stories where you read through it thinking you're on some foreign planet, some distant world, and in the very end, the reveal is that it really is earth after all. Think Planet of the Apes, but backward, is my thought; where it's the past and the future is the good one, or something. I love the reveal of the uncommon being the common, or vice-versa. I love the idea of there being no moon until the very end, or there being like three of them and somehow two get destroyed. It's the tale of how did we get here, but done in some new imaginative way. I also love the ones where it seems to be a very advanced civilization, perhaps imploding on itself or in someway coming undone, and in the end it turns out to be the far past and we have no idea that it ever existed. One of my most beloved games reveals near the end that history as they know it is not the original one; that at some point in the future, a research lab was sent into the far past, where it engineered the very structure of the continents. And when an accident occurred, all the future people were forced to go out and inhabit this world, becoming in only a few short generations the early cavemen that were to be the progenitors of the entire human race, thus creating one of those terribly fun time paradoxes.

Thinking of all this makes me want to write something similar, though I'm not entirely sure what. I just have this mental picture of a very young earth with three or five moons, or perhaps even ringed with moons, or something, and a very advanced society that can easily be mistaken for the far future. I picture a villain growing extremely powerful and changing the face of everything, in the end leaving the earth more along the lines of what we know now. I'm not sure whether I would want to leave it so that nothing whatsoever remains, or if the stuff somehow over time slags into the clay pots and such that we find now, or even if there are remains to be found, but only much further in the future; say if we're digging to the earth's core and discover it to me artificial, or surrounded by an enormous machine used for power. It's all terribly exciting to think about.