8 parts Ongoing Humanity. The Apex Species living in the planet called... Earth, located in the Sol System
That was. Until *They* came
The Raptures. An unknown alien civilization appeared out of nowhere one day, they spawned from the darkest corners of the Earth, it is still unknown how they even appeared.
But Humanity had more pressing problems
The two fought a bloody war, lasting a unknown amount of time, it was informally called "The World War" during the "Second Dark Age"
Ultimately. Humanity lost, Bad. Due to the Raptures endless numbers and invulnerability to most weapons.
Humans, more than 90% of their population dying, what's left of humanity was driven underground
Forced to adapt and survive
But even in this harsh times, Humanity remains corrupt, evil, and uncaring to each other
Though... The ones on the surface are different. Even after the War. Humans still lived in the surface, in small pockets, scavenging scraps of technology from the Second Dark Ages. Barely getting by
But once these two discover each other. And hopefully... Hopefully unite
"War does not care who is right. Only what is left"
And what is left... Shall rise once more