June 28th, 2016.

A biological maintenance in the facility is raided by French police men.
Despite of warning the lab technicians released 109 civilians they were "test subjects," not aware that they're carrying a bio-hazardous infection of the "N4 Virus"

July 2nd, 2016.

Located in the most major cities, a horde of the dead walking.
A team of armed bio-hazardous squadron were desperate to save many lives of the population trying to evacuate.

July 5th, 2016.

A squadron of the bio-hazard team were heavily out numbered from the infected.
The city is "doomed."

Basically Scientist's test on human subjects, and infected them, turning them into zombies,
and the world is dying of human race of flesh eating zombies...

Your role is playing as a survivor finding useful items and such to "survive."