Realistic or Modern Upside Down (MxF)

[Mitheral]

This is a fandom based on the movie by the same name, but with original characters. It is NOT necessary to have watched the movie. It is a romance between two people - one from above; one from below.


Setting
Ours is a two-planet world, unique among planets or planetary systems as it is the only one that has "dual gravity". This phenomenon of dual gravity allows the two planets to orbit each other in what would otherwise be impossibly close proximity. There are three immutable laws of gravity for this two-planet system:

1. All matter is pulled by the gravity of the world that it comes from, and not the other.
2. An object's weight can be offset using matter from the opposite world (inverse matter).
3. After a few hours of contact, matter in contact with inverse matter burns.

The societies of the two worlds are segregated by law. While the upper world (Up Top) is rich and prosperous, the lower (Down Below) is poor. Up Top buys cheap oil from Down Below and sells electricity back to Down Below at higher prices. A person from Down Below going Up Top (or having contact with anyone from Up Top) is strictly forbidden and can be punishable by incarceration or death. People from Up Top regularly visit Down Below to experience novelties like dancing on ceilings. The only physical connection linking the two worlds is the headquarters of the "TransWorld" company.


Note: The three laws are not quite as immutable as stated. For example, there is a single atmosphere. Strange things happen at very high altitudes.


(If you pay close attention the rope didn’t follow the laws, but that was a special effects flaw. The rope dangles down for the girl when it should be trying to fall “up”.)

Characters
I intend to run the male character. I am looking for someone to run the female. One of us should have grown up on Up Top; the other on Down Below. But each of us harbors a secret. Our mothers were from our home; but our fathers were from the other world.

So one of us has a mother from Down Below and an unknown father from Up Above. The other is the reverse. However, our mothers never told us.

Our mixed heritage is going to have a profound effect on us, the most important one is that we won’t burn in contact with inverse matter. The other will be that the inverse world will always be something we are obsessed with. This will ultimately lead to a scene similar to the YouTube clip above.