Retired, wealthy sea Captain Jame McKay arrives in the vast expanse of the West to marry fiancée Pat Terrill. McKay is a man whose values and approach to life are a mystery to the ranchers and ranch foreman Steve Leech takes an immediate dislike to him. Pat is spoiled, selfish and controlled by her wealthy father, Major Henry Terrill. The Major is involved in a ruthless civil war, over watering rights for cattle, with a rough hewn clan led by Rufus Hannassey. The land in question is owned by Julie Maragon and both Terrill and Hannassey want it.

In 1964, atomic war wipes out humanity in the northern hemisphere; one American submarine finds temporary safe haven in Australia, where life-as-usual covers growing despair. In denial about the loss of his wife and children in the holocaust, American Captain Towers meets careworn but gorgeous Moira Davidson, who begins to fall for him. The sub returns after reconnaissance a month (or less) before the end; will Towers and Moira find comfort with each other?

This gripping adaptation of the Jerome Lawrence-Robert E. Lee play examines an issue that still causes great controversy: the role religion should play in the schools.