Australia in 1964. Many people have been killed in the nuclear war in the northern hemisphere, and residents in the southern hemisphere are afraid that nuclear dust will kill them sooner or later. At this time, the American submarine commanded by Dewey Towers ventured to California because there was still a broadcast signal from San Diego, but all the troops stationed on the base were dead. On the other hand, Australia's protagonists face the coming world in different ways: scientist Julian Osborne suffocated after winning a car race; naval officer Peter Holmes committed suicide with his wife and family; socialite Molina Davidson tried to forget her fear by drinking and later fell in love with Towers. After a mysterious nuclear war, most countries in the world except Australia were destroyed. When the submarine led by Peck surfaced, he was shocked by the sight. A radioactive cloud is about to approach the surviving continent, and people begin to reflect on life as they wait for their fate to come.