Traded is a dark romance novel set in a criminal underworld controlled by a secretive organization called The Order, which traffics and breeds women known as "daughters." The story follows London St. James, a wealthy and ruthless figure, and the violent lengths he and his household go to in order to protect a woman named Vivienne.
The novel opens as London races home with Colt and Carven, twin brothers he rescued as children from The Order and raised as "sons," men created by the organization to serve as enforcers. London has discovered a contract in the apartment of a figure known as King, who is later revealed to be Vivienne's biological father. The contract shows that Haelstrom Hale, The Order's founder, secretly sold Vivienne, the woman London purchased, to Macoy Daniels, a wealthy man within Hale's criminal network. At the house, they find dead guards and Guild, London's closest friend and bodyguard, shot on the foyer floor. Guild tells them The Order took Vivienne. London tracks her using an implanted device, but the signal vanishes, blocked by a metal enclosure.
The perspective shifts to Vivienne, sealed inside a steel coffin in the back of a van. She fights claustrophobic panic as Daniels taunts her. When removed at Daniels's estate, she kicks a guard and runs barefoot into the night but is tackled, beaten, and injected with a sedative. A doctor cuts the tracker from her chest while guards pin her down. Daniels prepares to assault her.
The tracker's brief reactivation gives London the location. He and the sons storm the estate. They find Vivienne on a desk with Daniels standing over her, though he has not yet raped her. Her face is badly beaten. London shoots Daniels through the hand, and Vivienne beats him unconscious with a rifle butt. London keeps Daniels alive for interrogation and transports him to a warehouse. When Daniels's phone rings, London answers silently and listens as Hale makes obscene threats about Vivienne, not realizing who is on the line.
At Daniels's house, Carven discovers a knife pinning a card to the wall that reads "We want the daughter. Sons." This confirms that other Sons are hunting Vivienne. Carven follows the card's address to a rave, where a Son demands Vivienne and threatens to go through Carven to take her. Two more Sons emerge from the shadows, revealing three killers are targeting Vivienne.
A doctor confirms Vivienne was not sexually violated but warns London about unspecified "complications" he refuses to explain. The group relocates to a hotel suite. Colt, who rarely speaks, urges Vivienne to see herself as a weapon rather than a victim. That night, he confesses he thinks he loves her, deepening their bond.
London takes Vivienne to meet Dante Ares, the local Mafia leader whose territory contains London's new safehouse. During the visit, Vivienne recognizes Dante's adopted daughter Angelica from The Order. Colt, moving through the household unseen, overhears Dante's wife Meredith warning someone by phone that Ophelia, a woman connected to The Order and London's past, intends to go after Vivienne.
London moves the group into a fortified gothic mansion. Over the following days, Guild confirms that King is Vivienne's biological father. He also reveals that Ryth, the stepdaughter of Jack Castlemaine, one of London's prisoners, is Vivienne's half-sister. Vivienne messages Ryth through a secure program but stops herself from revealing their connection, fearing Ryth would return to danger.
Carven's relationship with Vivienne reaches a turning point. He pins her violently to the bed but stops when he realizes he is acting like the men who hurt her. Later, Vivienne offers herself to Carven on her own terms. He relents, and they have sex, rough at first but growing tender. London watches from the doorway and approves.
London learns that Daniels operates as an information broker through the Vault, a black-market archive of encrypted data. He forces Daniels to open it, cutting off Daniels's thumb for biometric access. Transcripts from an unencrypted chip reveal Ophelia fantasizing about torturing Vivienne. Colt finds the transcripts and, driven by childhood trauma at Ophelia's hands, nearly kills her before thoughts of Vivienne stop him. He spirals into a dissociative state at an underground fight ring. Sons abduct him afterward; their leader, Kane, warns that more dangerous groups called "the Others" will come for Vivienne. A team of former Navy SEALs rescues Colt.
Carven systematically hunts and kills Vivienne's attackers from The Order, carving "rapist" into each victim's chest. London tortures Daniels further, cutting out his tongue. Jack Castlemaine reveals that King has a third, older daughter not born through The Order, then vanishes from the warehouse under mysterious circumstances.
London is arrested on false charges orchestrated by Hale. He mouths "I love you" to Vivienne through the police car window before his attorney secures his release. Outside the station, he glimpses a woman with eyes exactly like Vivienne's, whom he believes is King's third daughter. News of Daniels's mutilated body brings scrutiny onto Hale and clears London. Vivienne discovers an ovulation tracking app on London's phone listed under her name, confirming his plan to impregnate her.
Carven traces Jack's disappearance to a marina, where King's eldest daughter ambushes him. London takes Vivienne to an exclusive club and clasps a leather choker engraved "Property of London St. James" around her neck. He tells her he intends to impregnate her, and she agrees. At dinner afterward, Ophelia appears and taunts them. As they leave, gunmen in a van open fire. London is shot in the shoulder. During the chaos, Kane seizes Vivienne and drags her into a derelict building. Carven tracks her screams, kills Kane, and rescues her.
Back at the safehouse, London has sex with Vivienne, intent on conception. Overwhelmed by the night's terror and intimacy, Vivienne proposes marriage. London reacts with horror and cannot respond. Devastated, she storms out. Colt, who has been silent and withdrawn, disappears with his phone switched off.
In the final chapter, Colt breaks into Ophelia's townhouse in a dissociative state. Ophelia reveals she is Colt and Carven's biological mother, carried through embryo implantation by Order founders. She taunts him with plans to destroy Vivienne, then delivers a devastating revelation: London cannot marry Vivienne because he is already married to Ophelia, a condition he agreed to when he took the sons from The Order. Colt beats Ophelia to death with a hammer. As headlights fill the driveway, signaling Hale's arrival, Colt calls London with trembling hands. He begins to say "Tell her I love" before the line cuts out, the novel ending here on a cliffhanger with Hale's arrival imminent and Colt's fate unresolved, as the Blood Ties Series continues in its next installment.