In 2033 less than 1% of the population survived a devastating pandemic virus. Half of those who lived were immune while half of the survivors mutated into something disturbingly subhuman.

Now decades later, the world has rebuilt in many ways but has become something else entirely. Strongholds of human survivors have been set up independently of one another across parts of what is formerly the United States. The rich live in highly guarded Utopias where technology and even an economy has been restored.