When a mysterious deadly plague descends on the earth, four friends are engaged in a life-or-death struggle against an alien race attempting to fumigate the earth.

An aging Caucasian ex-military pilot-turned-farmer and his wife struggle to maintain control of two newly acquired buffalo, while wildfires and drought blacken the sky and the farmer's sister becomes increasingly subsumed by doomsday cultism. cults build shelters to prepare for nuclear destruction. Set in the present day.