When they go into town, they find nobody left alive and cannot contact anyone by radio. It dawns upon the three that they might be the only survivors in the area, maybe in the world. The domineering Harold takes charge. They concentrate on becoming self-sufficient, and the two men fish, as marine creatures have survived. Later, they also find living insects and baby chicks, presumably newly hatched. Harold feels that in the long run, they will have to move north to a colder climate to avoid problems with insects and food preservation and to increase their chances of meeting other survivors.