Set in a battered, post-apocalyptic London on the third or fourth anniversary of a devastating nuclear war that killed 40 million and lasted a mere two minutes and 28 seconds—the moment the peace treaty was signed—the city’s survivors drift through the rubble, choosing silence over the word “bomb” as they navigate a world that barely resembles its former self.
Captain Bules Martin clings to a hollow sense of victory, bearing a so‑called “Defeat of England” medal for failing to save Buckingham Palace from collapse, and is casually nicknamed “Doctor” by Lord Fortnum of Alamein. Fortnum, already wary of the long shadows of the past, seeks a prescription for malnourishment yet fears that Martin is turning into a living bed-sitting room. In this grim landscape, the National Health Service dispatches a male nurse—Nurse Arthur—who is overwhelmed by the scale of the catastrophe and the strange new needs it creates.
Penelope, who now lives aboard a tube train on the Circle line with her parents, becomes entangled with her fiancé Alan. Together they flee with a trunk to avoid appearing as vagrants, unknowingly carrying a living man who has been deemed dead for three years. Two policemen hover overhead in a makeshift balloon crafted from a Morris Minor Panda car, shouting “keep moving” to any survivors they spot, trying to avert new danger amid the ruins.
Martin encounters Shelter Man, a regional seat of government survivor who spent the war in a fallout shelter and now spends his days watching old films (without a projector) and recalling the moment he shot his wife and his mother as they begged to be let inside. He reveals unsettling suspicions that bomb germ contamination may have been used to spread disease and erode the population, a memory that haunts the postwar world and pushes the living toward unnatural forms of self-preservation. The National Health Service then stalks Penelope and her family, issuing death certificates for Mother even while she remains alive, and attempts to ensnare her with a net.
Mother herself slips away, wandering into Shelter Man’s home where she eventually becomes a cupboard, a strange but memorable image of adaptation born from scarcity. Meanwhile, [Lord Fortnum of Alamein] calls Martin to say he’s at 29 Cul de Sac Place and ironically begins to blur the line between shelter and home, as a bed-sitting room gradually takes shape around him. In a further bizarre twist, the character Chinaman—often referred to as Mao Tse-tung in the era’s slang—moves Mother into the newly formed living space, further distorting the boundary between person and room.
Father is measured by the police, and Martin asks to court Penelope. Though she loves Alan, Father agrees, hoping it will help him become prime minister, a prospect suggested by a string of odd measurements and society’s strange criteria. The couple’s wedding is staged at St Paul’s Cathedral, which is partly submerged, officiated by an Underwater Vicar, jack-shepherd. Martin runs off to secure a virility test, leaving Penelope to endure the ceremony as she soon discovers she is in labor. Father is selected to become prime minister, a twist of fate that underscores the era’s absurd political calculus.
The National Health Service insists Penelope’s baby must remain in the womb, but she does deliver. When she shows the newborn to her father, he appears transformed into a parrot, and Penelope realizes that the cupboard is actually her mother. Tragedy compounds as Father takes his own life, and his body is cooked in the scarcity of fuel and food that defines everyday life. Mate warns of radiation as people rush to shelter inside their bed-sitting rooms, and Penelope and Alan discover their baby is dead. Rubber Man repents as the police knock down the bed-sitting room, and [Lord Fortnum of Alamein] briefly speaks as if he were God before being silenced by Martin.
The police return with a chest and reunite Martin with Nigel, the man inside. Penelope becomes pregnant again, a fragile thread of hope in an otherwise ruined world. The police inspector delivers a speech about the country’s future, while surgeons announce a cure for the mutations through a full-body transplant, offering a surprisingly hopeful note amid the devastation. In the final moment, a military band plays for Mrs. Ethel Shroake of 393A High Street, Leytonstone—the queen’s former charwoman and a figure connected to the throne’s memory—closing this peculiar, enduring chronicle with a strange sense of continuity.