Alas, Babylon recap

In 1959, Air Force colonel Mark Bragg warns his brother Randy that nuclear war is imminent and sends his wife Helen and their children to Randy's home in Fort Repose, Florida. A Soviet attack destroys major cities and military sites, leaving the town without power, communications, money, medicine, or outside government. Randy gathers family and neighbors into a cooperative household, while physician Dan Gunn and retired admiral Sam Hazzard preserve medical care and information. The survivors confront contaminated goods, hunger, illness, armed robbers, and the need to rebuild authority from local resources. Randy organizes defense, secures salt, and becomes the town's recognized leader; he and Lib McGovern marry. When Air Force helicopters finally arrive, Paul Hart reports that Mark has died and that the United States, though shattered, endures under a new president. Fort Repose is uncontaminated, but its residents choose to remain and continue the society they have improvised.

In the small central Florida town of Fort Repose, Randy Bragg lives without much direction after a failed political career. His older brother Mark, an Air Force intelligence colonel, sends him their private emergency phrase, warning that a nuclear attack may be close and that Mark's wife Helen and their children will come to shelter with him. Mark explains the military danger when the brothers meet and urges Randy to prepare without spreading panic. Back home, Randy begins converting the warning into practical action. He tells only people he trusts, including his neighbor Lib McGovern, physician Dan Gunn, and retired admiral Sam Hazzard. He withdraws cash, buys food and useful supplies, and asks the Henry family for help. The town around him continues its ordinary routines, largely unaware of how soon money, electricity, transport, and public authority may cease to function.

Helen Bragg reaches Fort Repose with Ben Franklin and Peyton, and Randy's enlarged household waits under the strain of Mark's warning. Nuclear detonations then strike Florida and targets across the country. The flashes and shock waves reveal that the feared war has begun; power and long-distance communications fail, nearby cities are destroyed, and refugees and frightened residents crowd the roads. Peyton suffers temporary blindness after looking toward the explosions. Randy brings the people under his roof together and starts rationing supplies. Sam Hazzard's radio provides fragments of news from beyond the town, while Dan Gunn faces injuries and a medical system suddenly cut off from laboratories, pharmacies, and hospitals. Fort Repose has escaped direct destruction, but its isolation turns every ordinary necessity into a limited resource.

The first shock becomes a sustained struggle. Currency rapidly loses meaning, the bank cannot meet the crisis, fuel and preserved food disappear, and public services collapse. Edgar Quisenberry, unable to face the ruin of the financial order on which he built his life, kills himself. Randy's household combines supplies and labor with the Henry family, using the river, garden, animals, and older skills to replace what commerce once provided. Dan continues making rounds with scarce equipment and warns about sanitation and radiation. The group learns that survival depends less on stored luxuries than on clean water, food production, cooperation, and people with useful knowledge. Randy increasingly makes decisions for the household, although the town as a whole still lacks reliable law enforcement or a clear civil authority.

A new danger appears when looted jewelry brings severe radiation sickness into town. Dan identifies the contaminated objects and Randy helps isolate and bury the hazardous material, demonstrating that attractive remnants of the old economy can now be lethal. Dan himself is attacked on the road by armed thieves who steal his medical bag and leave him badly injured. The assault shows that scarcity has created organized predators as well as cooperative survivors. With the remaining local government ineffective, Randy invokes his reserve military authority and begins forming a force from people he trusts. The household cares for Dan while Randy prepares to recover the medical supplies and stop the gang. Fort Repose's survival now requires law and collective defense, not merely food and shelter.

Randy organizes an armed ambush against the highwaymen who attacked Dan. The plan succeeds, though Malachai Henry is killed, making the restoration of order personally costly. Randy's group retrieves the stolen medical kit and ends the immediate threat, and the town increasingly accepts Randy as its leader. Longer-term shortages become pressing, especially the lack of salt needed for health and preserving food. Ben Franklin and other members of the community take on adult responsibilities as the survivors search local knowledge for a supply. Randy and Lib decide to marry, affirming a future beyond emergency improvisation. Helen, watching Randy grow into a commander and family protector, also begins to accept that Mark may not return.

The survivors locate a usable salt source and bring it back, solving one of the community's most dangerous deficiencies. Over the months, Fort Repose settles into a difficult but workable life based on gardens, fishing, barter, repaired tools, shared labor, and strict attention to contamination and disease. Randy and Lib marry, and the households around them have become the core of a renewed local society. Air Force helicopters finally arrive with Paul Hart, reconnecting the town to the remains of the nation. Paul reports that Mark died and that the United States has survived under a new president, though cities and institutions across the country are ruined and recovery will be long. Fort Repose is declared free of dangerous radiation. Its residents choose not to evacuate: they have obligations, resources, and a functioning community where they are. Asked who won the war, Randy answers only that the United States still exists, reducing victory to endurance after mutual devastation.

Months after the attack, Fort Repose has become a functioning but austere community under Randy's leadership. Its residents obtain salt, defend themselves against armed thieves, contain radiation hazards, and rely on farming, fishing, barter, and shared labor. Randy and Lib marry, while Helen accepts that Mark is unlikely to return. Air Force helicopters finally reach the town. Paul Hart confirms that Mark died during the war and explains that the United States survived but has been devastated, with national authority passing to a former cabinet secretary and vast regions still dangerous. Fort Repose is judged free of contamination, yet its residents decline evacuation because the town is now their home and their work remains there. When Paul asks whether the United States won the war, Randy can only answer that the country is still present. The closing exchange makes survival, rather than military victory, the meaningful outcome.