Premise
There is a concept known as the Simulacrum. It was presumably created by Edda, the maker. In the event that Edda is contradicted, the Simulacrum forces the creation of the universe to repeat. The current universe and the world is a copy of many copies before it. This process is about to happen once more, but something is different this time. Our characters are the original versions of themselves within the current copy of the world. This has caused the normal course of events to disrupt and change.
Hundreds of years ago, mankind was nearly brought to extinction by a disease that turned man and beast into titanic monsters. To prevent annihilation, humanity built a monolithic, hollowed out, planetoid ecosystem called Sphere that low-orbits the world. Sphere is ruled by the Regent Aedesia, who keeps the citizens of her false utopia in ignorance of reality.
The world below the Sphere, Atlas, is being torn asunder by natural disasters and the diseased monsters due to the coming revelatory events. The city of Astral is under siege by titans and earthquakes. Our characters are on a critical mission in the city to secure valuable assets, but they are cut off from High Command and left for dead.
For reasons unknown, our characters are possessed by powerful metaphysical beings known as Cetra, and subsequently branded traitors and enemies of Sphere by the Regent Aedesia. Our characters soon realize that escaping or hiding is futile. Fighting back is the only option. While doing so, they discover that they have a much greater purpose in the cosmos than they could possibly imagine.
Other
Expect the world to be traditional Final Fantasy cyberpunk with high tech and low life, nature versus technology. The setting and themes are inspired by Ergo Proxy, The Matrix, Final Fantasy, and French philosophy. The characters will be forced to deal with predicaments such as identity and the personal self, the concept of choice in a world with a predetermined destiny, and the nature and existence of the maker.