The Solomon family has lived on 200 acres in Diggs, North Carolina, for over 230 years. The property, known as the Kingdom, centers on the family house. When 63-year-old King Solomon collapses near the workshop and dies of a heart attack, his final whispered words to his son Mance are "Don't let the white man take the house" (26).
King's four adult children are scattered and estranged. Junior, the oldest and an elementary school principal, presents as a straight married father of two while secretly in love with Simon, a man he has been seeing for a year. His wife, Genesis, recently agreed to a monthlong separation so Junior could explore his feelings. CeCe (Cecily), the third-born and a lawyer in New York City, has embezzled $250,000 in client funds. Mark, a junior partner at her firm, discovered the theft and extracts sex for his silence. Mance, the second-born and King's physical double, is a skilled carpenter who has served two prison sentences. He is learning sign language for his infant son, Henry, who has profound hearing loss. Tokey (Angeline), the youngest, has spent her adult life caring for King and the Kingdom while hiding a compulsive overeating disorder. She grew up believing her mother left the family decades ago.
The siblings return for King's funeral but can barely function as a family. CeCe and Tokey clash immediately. Mance builds King's pine casket in the workshop, and Junior reconnects with his carpentry roots by helping. At the graveside, CeCe reunites with Ellis, her childhood first love, now a lawyer in Diggs who was taken in by King as a boy. After the service, a process server hands Mance a notice of trespass: A real estate investment company called Malone & Kincaid claims ownership of the Kingdom and five surrounding acres, and the Solomons must vacate within two weeks.
Ellis explains the predicament. King died without a will, making the land heir property, a form of ownership in which descendants inherit an interest in land without clear title. King's estranged brother, Shadrick (Uncle Shad), had legal standing as an heir to sell his share. Ellis assigns roles: Junior will meet with Malone & Kincaid, CeCe will accompany Ellis to Charlotte, Mance will confront Uncle Shad, and Tokey will search for documents. CeCe is privately panicked; King had called her multiple times before his death asking her to review legal papers about the land, but she dismissed his requests.
Each investigation deepens the crisis. Uncle Shad, a career criminal, confirms he sold five acres for $40,000, a fraction of the land's value. He tries to recruit Mance for a robbery, but Mance refuses. In Charlotte, Ethan, Ellis's law school friend and a real estate attorney, explains that Shad exploited the Torrens Act, an obscure legal doctrine now used to seize land from the poor. CeCe realizes these were the letters King asked her to review. Ethan notes they have missed the appeal window but will file anyway, and reveals the Kingdom could be worth several million dollars.
Junior's meeting with Malone & Kincaid, arranged by Genesis's father James Reid, goes badly. James proves to be an ally of the developers. The company offers a check for $2 million for the entire property, which Junior takes without signing. James later reveals his full scheme: He brokered Uncle Shad's sale, plans to convert the Kingdom into a luxury hotel, and has photographs of Junior in a sexual encounter with Simon. He blackmails Junior, demanding he convince the siblings to sell or the photos will go to the school board.
Meanwhile, Tokey discovers an old letter in King's dresser, signed by "H" and addressed to "My King." It leads her to Miss Jessie, an older neighborhood woman who has held a folder of letters written by the children's mother for decades. Tokey intuits that her mother's name is Hazel. The letters reveal King and Hazel's love: their marriage after Shad killed Hazel's abusive stepfather, their years together. When King was injured and could not work, Hazel went to James for financial help. James coerced her into sex by threatening to report King and Shad to police. Hazel became pregnant, and because King could no longer have children, Tokey concludes James is her biological father.
Mance, tormented by his promises to protect the Kingdom and provide for Henry, agrees to help Uncle Shad rob the Prescott House, a historic Charlotte mansion, posing as a mover to appraise its furniture. Shad's associate Cedric steals a diamond ring during the job, and Mance takes it intending to return it. Police later stop Mance on an anonymous tip, and the ring falls from his pocket. He is arrested. Ellis gets the charges dropped, but the truth emerges: Shad set Mance up to clear the way for more land sales. Lisha, Henry's mother and Mance's partner, visits Mance in jail and tells him she is taking Henry to Charlotte. She loves Mance but cannot watch him self-destruct again.
After his release, Mance and Junior share their most honest conversation. Junior reveals he is gay. They are called to Lisha's house, where they find Uncle Shad stabbed by Lisha's landlord in self-defense. Shad dies asking to be buried at the Kingdom, and they bury him on the property.
CeCe's crisis peaks when Mark lures her to a Charlotte hotel, where he intends for her to have sex with a stranger to secure a client. When she refuses, Mark assaults her. CeCe fights back and flees. Ellis, who tracked her down, beats Mark and threatens him. That night, CeCe tells Ellis everything and confesses her love, spending the night with him in her first act of full vulnerability.
Tokey visits Miss Jessie again and learns the midwife was wrong about King's infertility: Tokey is King's biological daughter. Miss Jessie reveals that Hazel died in childbirth with Tokey, and that King carried her body on foot from the hospital, built her casket, and buried her by the creek.
Tokey gathers the family and shares Hazel's letters, insisting history is repeating across generations and they must break the cycle through honesty. Each sibling confesses: Tokey's eating disorder, Mance's work for Shad and his arrest, CeCe's embezzlement and assault, and Junior's sexuality and Genesis's pregnancy. They decide not to sell. Junior tears up the $2 million check and grabs the sledgehammer that has stood beside the front door for generations.
Junior drives to James's office and uses the sledgehammer to destroy it, smashing James's hand and forcing him to acknowledge what he did to Hazel. His final words: "It's King now" (367).
At the courthouse, the judge rules against the Solomons; the house must be vacated. Rather than surrender the Kingdom, the siblings destroy it. Mance drives to the property and kneels in the grass. Junior follows and climbs into an excavator belonging to Lou, a neighbor, ramming it into the house's load-bearing columns. Police arrest Junior and Mance. CeCe commandeers the excavator and destroys another column. Tokey arrives last with the sledgehammer and swings it into the final column; the rest of the roof collapses. The Kingdom, as a structure, is gone. All four siblings, Genesis, and Ellis are handcuffed on the ground, where they press their foreheads together in their family's gesture of love.
Three months later, Junior, fired after his sexuality became public, works alongside Mance building furniture and plans to rebuild the Kingdom. He and Genesis have divorced. Malone & Kincaid abandoned their project. Mance proposes to Lisha, and Henry receives cochlear implants. Tokey sets out to travel the world. CeCe accepts a six-month plea deal for the embezzlement, planning to return to Diggs and marry Ellis. The novel closes on the empty plot where the Kingdom stood, its legacy alive in the family that chose to destroy it rather than surrender it. Those who witnessed the destruction understand it as the place where intergenerational trauma died. The siblings freed themselves by choosing their own fate.