An exploration of the reality of potential nuclear attacks on the United States with an emphasis that survival is possible. It outlines key strategies for protection during a nuclear emergency, including recognizing warning signals, taking immediate cover, and understanding the effects of a nuclear explosion. The film stresses the importance of preparation, including knowing evacuation routes and creating a family protection plan. It also highlights the significance of mass, distance, and time as defenses against radiation, and encourages citizens to stay informed and ready in the event of a crisis.