Emeline arrives in the clouds, where an attendant addresses her by name rather than identification number, explaining the Elite consider numbers inhuman. He escorts her to the Starlings, two women named Rose and Violet, who will prepare her for the meeting with her mate.

The Starlings subject Emeline to a degrading transformation process: harsh scrubbing, waxing all body hair, and applying makeup. Rose recoils at Emeline’s eyes, noting that visual “defects” have been eliminated by the Illum’s Procreation Program. As they work, Emeline recalls the lessons of compliance in the Academy and her forbidden friend, Alice, who spoke of escaping the Illum’s regime and later disappeared.

Violet reveals an unprecedented gift from the Illum—a lens to cover Emeline’s blue eye, making both eyes brown. The Starlings take away her gray clothes, the Minors’ mandated attire, and dress Emeline in a shimmering gold gown. Seeing her reflection with matching eyes and elegant appearance, she is moved to tears. Violet reminds her that she must either follow the Illum’s rules or face elimination.

Emeline arrives at a secret garden restaurant where Elite diners stare and whisper. She marvels at the natural beauty and wonders why the Elite destroys art. Her proposed Mate, Collin, greets her with unexpected kindness, and Emeline feels captivated by his charm. Collin apologizes for her birth family’s unkindness and suggests a favorable four-year cohabitation contract, disregarding the mandated trials. Confused by his attitude, which conflicts with the Academy rules she constantly recalls, Emeline questions why Collin would choose a “Defect” as a mate. Collin says Emeline is different from what he expected and is his first mating.

An Elite named Edward interrupts their dinner, condescendingly calling Emeline a “pet.” Collin coldly corrects him, asserting she is his intended Mate. After Edward leaves, Collin apologizes to Emeline and reveals he is not Elite but the youngest member of the Illum. He explains that Tabitha, the female head of the Illum, advised him to take a Mate and the system paired them. He warns that the Press and the Elite will watch constantly but promises to handle concerns about her “defect.”

The next morning, Emeline wakes up recalling her dinner with Collin. Lo marvels at her lens and questions her about the experience. Emeline reveals her Mate is a member of the Illum, shocking Lo.

At her office, Emeline finds Hal waiting for her while Collin has sent flowers. He holds Collin’s notecard that calls Emeline “the most beautiful thing in the room” (51). When an attendant delivers the Procreation Contract, Hal is appalled as Emeline signs without reading it. He points out harmful clauses regarding infertility, but she insists she has no choice. They argue, with Hal calling her “brainwashed and compliant” (52). As he leaves, Hal tells her Collin was wrong to praise her while she hid her heterochromia—the very feature that makes her beautiful. Stunned, Emeline throws her pen at the doorway.

Four days pass with no word from Collin, and Emeline longs for a visit from Hal. The irritating contact lens pains Emeline, but she refuses to remove it, fearing rejection from Collin. Pondering on her procreation contract, she keeps questioning the workings of the Elite and the Illum.

Hal reappears and insists Emeline remove the lens. After she admits her fears, he apologizes and reassures her. Emeline takes the lens off, and Hal calls her eyes “striking.” Hal discusses more art as they examine another painting. He offers a poignant interpretation about final goodbyes, and Emeline shares her theory that the Illum destroy art that represents people’s emotions to prevent dissent. Hal says he underestimated her. He promises to revisit her and leaves.

Soon after, Emeline receives messages about her next meeting with Collin. Rushing out, she finds the atrium crowded with Elite and panics. Moving among the crowd, she collides with her birth brother Phillip, who coldly dismisses her while other Elite members make condescending comments about her mismatched eyes. Devastated, Emeline runs to the Pods, feeling hopeless.

At the Starlings’ room, Violet and Rose prep Emeline while discussing the rebels who attacked the Capitol building, killing six Elite. Rose’s source is an Elite named Eve and notes a big meeting is scheduled with the Illum present. The Starlings reveal a rebellion is forming, with rumors that Minor offspring are downgraded to Majors at the Illum’s will. The Elite Force—violent law enforcers—is involved. Violet shares this information because she recognizes Emeline’s curiosity and her inclination to question authority.

Rose dresses Emeline in a sheer gown. A glowing gold band appears on Emeline’s wrist, officially marking her Procreation Agreement. The Starlings are surprised, realizing that her mate is an Illum. Violet suspects this event might be a planned distraction from the current uprising.

Emeline recalls Alice again and their questioning of the Academy's education and the Illum’s authority. Her mysterious disappearance still troubles Emeline. Soon, the Pod takes her to the Sphere, a glass building suspended impossibly high. Terrified, she crosses a transparent bridge to a floating ferry carrying her to Collin.

Collin welcomes Emeline and notes that he knows about the atrium incident. He confirms Phillip is her brother and reveals she has two more brothers, Gregory and Richard.

He also informs Emeline that they must attend a High Council dinner in six days per Tabitha’s orders, who rules the Illum for 50 years. A Hologram Instructor will provide daily protocol lessons to Emeline.

Emeline keeps questioning Collin about the rebellion. Surprised she knows, he guesses the Starlings told her. She lies to protect them, claiming they only said an Elite named Eve had told them there was trouble. Collin confirms the unrest delayed their meeting as the Illum is determined to contain dissent.

Emeline and Collin share tea and food and watch the sunset. Collin breaks Elite etiquette to indulge her desire for chocolate. As they leave on a floating platform, he pulls her close protectively. She admits she never expected a public relationship when she sees birth family arriving on another platform.

Emeline’s birth family arrives before her and Collin: her mother Helen, her father Vincent, and her brothers Phillip, Gregory, and Richard. Emeline observes them together, feeling heartbroken. Helen notices the gold band on Emeline’s wrist and claims it is an honor. Vincent implies that Collin should have informed him and hatefully looks at Emeline. Collin retorts that the Elite are unworthy of input into Illum decisions. Helen invites them to a family dinner. Collin accepts and curtly dismisses them.

Emeline turns to Collin, who steadies her and says that as his mate, she is “an extension” of him. He argues that her family will regret their unkindness. Noting that everyone watches, Collin asks Emeline if she trusts him and reminds her of Academy Rule Ten: She cannot tell her Mate no. He murmurs an apology and kisses her. The kiss becomes passionate, and Emeline responds. Suddenly, he pulls back, his gaze “untamed and wild” (90), and leaves.