 Presented in the format of a live TV-news broadcast, the film tells the story of three asteroids crashing in the Midwest, in France, and in the Gobi desert. When a fourth asteroid is sighted coming in over the North Pole the Air Force shoots it down, only to suddenly realize that three more fireballs are heading towards Washington D.C., Moscow and Beijing. As scientists speculate that the asteroids were intentionally sent by alien beings to communicate with earth, the military manages to shoot down the other three fireballs, only to discover that thousands more are now on their way...