A global nuclear war has wiped out the entire population of the Northern Hemisphere. Southern Australia is one of the few places left where the radiation has not yet reached. Peter, a commander in the Australian navy, is assigned to join Commander Dwight on a mission aboard a submarine to learn about the extent of the damage of the war.
Join me on the U.S.S. Scorpion in finding survivors along the Australian coast, Peter.
Peter and Dwight embark on an nine-day long journey with several other crew members. Among the other members is John, a civilian scientist. Through scouring the Australian coast, the crew only spots one living dog and concludes that there are no survivors in the area.
After analyzing the data from the trip, John estimates that they have six months to live before the radiation reaches Melbourne and kills them all. While most others struggle to accept their fate of death in a few short months and try to continue on with their normal lives, John is realistic and fulfills his life-long goal of owning a Ferrari. Peter spends his time gardening with his wife, Mary, and baby daughter. Dwight hangs out with Moira, a friend of Peter and Mary. Although Moira is romantically interested in Dwight, he is emotionally unavailable and believes his family is still alive and waiting for him in America.
The crew is sent on another mission to investigate the Jorgensen effect, which claims that precipitation will cleanse the atmosphere and the radiation will not reach southern Australia. In addition to this, they are instructed to investigate vague, intermittent radio signals being sent from Seattle. After around a month, they arrive in the Seattle area but are disappointed to find that the signal was coming from a window sill randomly hitting the transmitter with the wind. There is no sign of life in the Northern Hemisphere, and the radiation data disproves the Jorgensen effect.
As the radiation cloud approaches, people spend the few months they have left doing the things they love. Less time is spent on jobs and working, so the city becomes very dirty.
The radiation will soon kill us all, so I want to achieve my life-long goal of racing in the Australian Grand Prix in my new Ferrari.
People begin to feel the effects of radiation and grow very sick. John takes a cyanide pill while sitting in his beloved Ferrari. Dwight ends his life by sinking the U.S.S. Scorpion. Moira sits in her car on a cliff overlooking the water and takes a cyanide pill while watching Dwight depart in the submarine. Peter euthanizes his baby daughter, Jennifer. Peter and Mary then take cyanide pills and peacefully pass away in bed.