The people of Fox Mill are mysteriously dying. Starting with flu-like symptoms, the illness quickly takes control and the patient deteriorates rapidly. Specimens have been taken, but no one in the hospital can identify the microorganism. The specimens are sent to the Center for Disease Control and Prevention in Atlanta, but even they are having trouble identifying it so they send a medical team to Fox Mill. Dr. Kathleen Davidson and her team quickly quarantine the town. By this time, the town is in a state of panic and military support is called in. Time is running out for Kathleen as more and more are dying and the healthy people are trying to escape. She has to find out what is causing the illness before it can spread to the surrounding areas and possibly the rest of the world.