Alan and Molly are young, in love and expecting. The last thing on their minds is a disease that ravages the nervous system and turns its victims into feral, flesh-eating beasts. As the world nose dives into the apocalypse and the government takes action in rounding up the infected, Molly rapidly develops symptoms. Believing that love can conquer all, Alan secrets his wife away, hiding her from the world. If he can just wait it out, Alan thinks, all will be well. But Molly is very, very hungry.