On the last day of normality in Mackinaw, Illinois, Oliver McCallister thinks his worst problem is figuring out how to come clean to his wife about the secret he’s been keeping from her. Zoe McCallister thinks her worst problem is squeezing in an errand at the courthouse before another long day of nursing classes—and worrying about whatever Oliver is hiding from her.

For a decade now, the world has known of the existence of the immuno-degenerative and epidermal decomposition virus (strain two). The world governments and several civilian agencies have, so far, managed to keep the unimaginable from happening. They achieved it by keeping the outbreaks under control and preventing a global pandemic.

Two teenagers find a frozen corpse in the middle of the woods and decide to bring it back to town. They have no idea they just sparked the zombie apocalypse. In the morgue below the hospital, the dead begin waking up and attacking the living. The infection spreads rapidly, turning the place into a slaughterhouse as those inside fight to survive against the undead.

It all starts with a single dead person coming back to life. Within three days, the undead have taken over most of town. Despite heroic efforts and swift initiatives from the government, disaster keeps spiraling. Soon, the infection reaches the nation's borders, threatening to become a worldwide pandemic.

Dr. Saunders skyrocketed to the precipice of immortality when his brainchild, Project Starlight, was green-lit by his company. He would be remembered forever, but not for the reason he hoped. There was a dark side. Was his technology being used for another purpose? Someone at their parent company has a secret. Without his knowledge, his science was being perverted through genetics. They’ve been testing on human subjects. The poor souls strapped to the injectors have suffered. What is Trans Global Pharmaceuticals' plan?