Set in a near-future America where climate catastrophe has accelerated, the novel follows several interconnected lives upended by Hurricane Luna, an exceptionally destructive hurricane that devastates Miami and Houston over 11 days, displacing millions. Interspersed throughout the narrative are excerpts from a "Digital Chronicle," an academic project compiled by Vanessa Holton at the University of California, featuring survivor testimonials and analysis that frame the disaster in broader social terms.
The story opens
in medias res at Tooley Farm, a Federal Emergency Management Agency (FEMA) megashelter in rural Oklahoma housing roughly 8,000 internally displaced persons (IDPs). A girl named Mia plays Range, an elaborate nighttime game the shelter's children have invented, with squads, hierarchies, and territorial rules. Her younger brother Oliver plays on a rival squad. Twenty buses arrive carrying new evacuees, threatening the children's fragile social world. The novel then rewinds to trace how these characters arrived here.
Off the coast of West Africa, three storm systems converge into Hurricane Luna and begin tracking toward Florida. In Miami, Daphne Larsen-Hall, a ceramic sculptor preparing for a gallery opening, contends with her stepson Gavin, a 19-year-old Stanford dropout who has grown bitter since moving back home. Daphne's husband, Brantley Hall, a surgeon, dismisses the household tension. At Daphne's opening, all her pieces sell, but Brantley is oddly anxious about money, pressing her gallerist Pilar Guerra about unpaid commissions.
In Kansas, Lorraine "Rain" Holton, a FEMA disaster assistance engineer and army veteran, leads tornado recovery operations. A photograph of Rain rescuing a baby from a flood once appeared on the cover of
Time, bringing unwanted celebrity. Her boss orders her to Oklahoma to build a shelter for 10,000 evacuees. In Houston, Tate Bondurant, a 41-year-old insurance agent who moonlights as an opioid dealer, learns his suppliers want him to distribute "wildfire," a potent synthetic opioid taken as sublingual tabs. Tate's dealing began years earlier when he procured black-market painkillers for his chronically ill son, Connor. As Luna nears, Tate and his courier Jessamyn, a young musician, steal the entire shipment and flee.
When Florida's governor belatedly orders an evacuation, the Larsen-Halls scramble to leave. Brantley departs for the hospital to oversee the medevac of intensive care patients; Gavin drives the family north. At a gas station, Daphne discovers her purse is missing. Mia's recollection confirms Gavin left it in the driveway; Gavin privately recalls deliberately backing over it. Without cash, cards, phone, or ID, the family is helpless. Gavin mocks Daphne; she erupts at him for the first time.
Luna devastates South Florida with 215-mph winds, catastrophic storm surge, and record rainfall. At a county fairground, the family receives IDP bracelets and bus tickets to Oklahoma. Daphne manages to save one prized sculpture, Sentinel, in her luggage but is forced to surrender the family's beagle, Cricket, under a suspended pet-evacuation law. On the bus, Gavin shows Daphne footage of their Coral Gables neighborhood submerged beneath a new lagoon. Brantley never calls. Luna subsequently crosses the Gulf, devastates Houston, and dies over Texas.
At Tooley Farm, Rain oversees construction of the shelter while balancing security against residents' civil liberties. The Larsen-Halls settle into a dome tent. Mia befriends Luz Calel, a Guatemalan girl whose migrant-farmworker parents were stranded when evacuation buses failed to reach them. Daphne contacts Brantley's hospital and learns from his supervisor that he died at Miami International Airport during the medevac, having delayed the transport decision until it was too late. She tells the children he died saving his patients. Through "Steve," a volunteer financial counselor at the camp, Daphne discovers that Brantley refinanced their house without her knowledge, let their insurance lapse, and opened credit cards in her name, leaving the family destitute.
"Steve" and his companion "Kaitlyn" are actually Tate and Jessamyn, posing as Houston volunteers. Tate counsels residents while secretly skimming from their bank accounts. They befriend Gavin, who craves Jessamyn's musical companionship, and recruit him to sell wildfire from the camp library, hiding tabs inside donated books. Jessamyn becomes addicted to her own product.
Daphne wakes one morning by the camp creek and discovers the bank soil is rich, workable clay. She organizes pottery workshops, reclaiming her artistic identity. An informal school forms in the pavilions, Gavin's daily story hour becomes popular, and a pickup band called the Displacements coalesces, with Gavin on bass and Jessamyn on guitar. Brantley's mother, Flo, arrives after being expelled from her retirement home because Brantley drained her accounts. When Daphne asks about a 529 college savings account Flo mentions, Gavin confesses: Brantley told him the fund was empty, ordered him to leave Stanford, and demanded he hide the truth.
Tensions mount. Kyler Biggs, son of Chester Biggs, a Florida carpenter, leads an all-white squad of children who assault Luz. Mia retaliates by vandalizing the Biggs family's tent, an act the residents of Crackertown, the camp's white separatist enclave, blame on the Guatemalan families. An Immigration and Customs Enforcement (ICE) raid follows, detaining Luz, her brother Bembe, and other undocumented residents. Luz, realizing Mia's vandalism precipitated the raid, boards the bus without forgiving her.
Pilar wires Daphne $13,200 from art sales and insurance proceeds, but the money has already been transferred to a bank in Guatemala City. Daphne calls hospitals in Antigua, Guatemala, and confirms that Brantley is alive and working as a surgeon abroad. He faked his death, abandoned his family, and stole the last of her money.
On the night of the Displacements' concert, Tate beats Gavin outside the fence and presses a gun to his head. Children from a Range squad drive Tate off with thrown rocks. Daphne confronts Tate and threatens to expose him; he flees Tooley Farm. Jessamyn, left alone with a supply of wildfire, fatally overdoses. Gavin finds her body and places tabs on his own tongue before spitting them out.
A massive late-season tornado forces a full evacuation. Chester Biggs and armed followers barricade Crackertown, declaring it sovereign territory. A lightning strike kills five of the holdouts. Daphne and Gavin carry Jessamyn's shrouded body through the storm to the last bus. The tornado destroys Tooley Farm behind them.
Police find Tate dead on County Line Road the next morning. Gavin gives away his drug money. Daphne secures a caretaker job in Sarasota and tells Gavin he is coming with the family, insisting he is a good person capable of becoming someone better than his father. She calls Brantley, who proposes the family join him in Antigua. Daphne refuses and threatens exposure.
Rain, facing a federal investigation, accepts Sentinel, a sculpture Daphne created during her graduate studies and her only remaining possession of value, as a parting gift. At the airport, rather than flying home, she begins making calls to reunite the detained Guatemalan children with their families.
The Larsen-Halls stop in Florida to visit Roberta Grimes, the bus driver who cared for Cricket. Gavin suggests Roberta keep the dog, recognizing Cricket will thrive in a stable home. On the road to Sarasota, he stops to teach a stranded teenager how to change a tire, reclaiming a skill Tate once taught him as something constructive. Closing Digital Chronicle entries provide wider context: Luz's family reunites in Guatemala, Daphne returns to Miami to create a large-scale environmental artwork from the ruins, Gavin teaches fifth grade, and Vanessa Holton, Rain's daughter and the chronicle's principal investigator, reflects on resilience as both recovery and refuge.