Las Vegas, even before the apocalypse, held the nickname Sin City.
This was largely due to its thriving gambling industry.
A flourishing gambling industry inevitably brings illegal activities such as prostitution, violence, and money laundering!
After the apocalypse, the label of Sin City seemed all the more fitting.
The reason was an experimental research program by the U.S. military—the Bio-War Beast Reform Program!
Humans, masters of Earth and the strongest species in the world, possess an insatiable desire for control.
Before the apocalypse, American Emperor was the world's most powerful scientific and research force. Consequently, it turned its attention to humanity's most visible enemy after the apocalypse: mutant beasts.
That was the beginning of it all, and the source of all evil.
「Over four months ago, Las Vegas.」
A gentle rain was falling. Under the dim, gray sky, the entirety of Las Vegas seemed eerie and frightening.
