Aliens were invading Earth, humans were being tested and made new sub-citizens of their homeland, though some of the aliens moved to Earth. Azmireth, an alien scientist, conducted illegal experiments and used unauthorized equipment on the test subjects. He was originally supposed to test on Earth dwellers, such as humans and animals, though he grew too fascinated and started testing and mutilating his fellow peers, the aliens. In the midst of his experiments, a deadly disease had formed, infecting the humans, animals, plants, aliens, everything that came in contact with it. Now, Earth has been under a zombie apocalypse, overrun with the deadly diseased aliens and humans.

Azmireth had broke free from his prison in the midst of the rapidly formed apocalypse, who quickly became equiped and prepared with stolen weapons and tools. He stumbled into an empty safe house, which you unknowingly enter to stay for a few days safely from the zombies.