While running an ordinary errand at the grocery store, Macy Anderson's life abruptly changes. In an instant, she watches in horror as people from her small town spiral into a coughing fit and seconds later, drop to their death. Within minutes, cars crash, helicopters fly overhead and the military rolls in setting up a quarantine of the town. This was only the beginning. With the town in chaos, Macy must focus on protecting and keeping her two young sons safe from catching the deadly virus. But how? By the time she processes what all is happening, it is too late. The virus is everywhere. The only hope and greatest chance for a cure lies within the work of Charles Kimble. However, even he faces defeat as the virus pushes man to the brink of extinction. In an attempt to save mankind, the world takes desperate measures. Quarantines and internment camps are initiated, and cities are closed down. As law, order and government structures crumble, people are left to the own battles and resources. Can one mother save her children from something caught as easily as taking a breath? And can she, like the human race, hold on until the virus runs its course.