From the introduction:
Do you like a scary story? Or maybe a world with a cliché horror setting? Maybe you just want to shoot others with impunity instead, or take advantage of the masses to show just what humanity really needs to thrive. Regardless of what exactly it is you seek, you'll doubtlessly find it in the world of Resident Evil. A world where zombies and mutated monsters are not only real, but they have a nasty habit of popping up.
Medicine has come a long way in this world, and with it the age-old allure of ambition. Viral agents have been created and conspiracy has blanketed the world in the pursuit of power, and it seems like any company with the resources can unleash a zombie apocalypse at any time.
But that's why we have people like you, right?