Karlie Scott arrives to cancel her engagement, but a family ceremony interrupts when the Scotts announce Jaycee as their long‑lost biological daughter and rightful eldest. Jaycee taunts Karlie’s adopted, lowborn origin and admits she "didn't mean to submit that genetic match request" that paired Karlie with the planet’s powerful Ninth Prince. Humiliated and pressured by status claims and the match confession, Karlie confronts the man she was matched with, telling him, "I'm here for a divorce." The episode ends with Karlie’s title and marriage unsettled as Jaycee’s revelation threatens to overturn everything.
Karlie meets a man who looks nothing like she imagined and discovers his pheromones are unusually strong. He reveals a mistaken match request showing 100% genetic compatibility, and his scent immediately unsettles her. She steps back, warns him not to come closer, and offers to buy suppressants. He refuses to leave, says he feels terrible, and asks for help. As the pheromone-induced tension peaks, he pleads, "I like you too," and they agree to face the sensitive phase together — but how they'll control the attraction remains undecided.
On the last day to register at Luprea University, adopted daughter Karlie Scott rushes to enroll after a clerk questions her marital status. Determined to repay the Scotts and cut ties, she decides to auction her mecha designs and confirms the listing. News breaks that Karlie applied for a genetic match, and classmates spread gossip on the school forum, taunting and following her. The situation escalates from whispers to viral humiliation during registration. The episode ends when a student approaches, 'Are you registering by yourself?', leaving Karlie publicly exposed and the fallout unresolved.
Karlie returns to campus and is publicly confronted by a woman claiming to be the real heiress, taunting her about Gael and calling her a fake. Rumors explode when someone admits to tampering with Karlie's device connected to her genetic marriage, causing scandal. Jerome Scott, Luprea's Chief Instructor, steps in, condemns the hacking, forbids further gossip and demands accountability. He offers to walk Karlie back to her dorm but stops at the gates. Karlie smells an unfamiliar scent; the scene ends with a student asking, "Karlie, who is he?"
Guards discover His Highness missing and order lockdown; staff panic because he left alone during a sensitive phase. At the same time Karlie is confronted for leaving—Anton accuses her of being with another man. Jerome, her brother, leaves to handle the disturbance while Anton refuses to accept it. Karlie shocks him by revealing she quit the Scotts and is now a lowborn; Anton seizes this as a chance to protect her. Gael, enraged and humiliated, vows revenge and storms off to teach her a lesson, leaving Karlie and the missing His Highness in jeopardy.
At school, Karlie tries to slip away but a persistent classmate follows, asks to hold her hand and confesses he fell for her. Security then finds "Your Highness" with his tracker off and orders him to stay in a safe house during a sensitive phase. Someone tells Karlie, "Wait here, Karlie. I'll go handle this." Meanwhile, news credits three million Star Coins for Nightfall's instant design sale; the funds are meant to settle with the Scotts and cut ties. The episode ends with classmates mocking Karlie's basic mecha models, leaving her exposed as royal secrecy and Nightfall's windfall press in.
Among colleagues tensions flare when Karlie keeps insulting Jaycee and someone's fiancé, refusing to apologize despite pleas and Gael's intervention. To settle it, Gael says they'll handle it the mecha engineer way and brings in a top Mecha Department operator to demo the latest neural-link. The live test defies expectations—left mecha +32% and an impossible right-side +287%—prompting accusations that the old link style wastes power and that the result was luck. The demonstration cuts off when someone demands, "Who allowed you to touch her?", leaving an accusation of improper contact unresolved.
At a crowded mecha match, Knox shocks everyone by stepping forward as Karlie’s legal spouse after she admits they matched. A challenger pushes for a real fight and the Cooks roll out Night Terror, a custom million-dollar mecha expected to dominate. During the duel, Knox rips out Night Terror’s core power unit with his bare hands, disabling the military-grade armor and silencing spectators. Observers refuse to believe he tore it open; Karlie grimaces, saying, 'his mecha is so hard — my hand hurts.' With the champion neutralized, the arena braces for immediate fallout.
After a fight leaves Ms. Scott injured, she asks Karlie to take her back to the dorm. Royal Guards instead move her belongings to the Star Dust Tower. Identity confirmation registers Ms. Scott and Prince Anton together. Anton admits he used the alias Knox to stay close, then used royal privilege to upgrade her room to the Star Tower penthouse and register them as cohabitants. Everything is now official and legal. Ms. Scott protests she thought they should stay under the radar and now faces being forced into cohabitation.
Karlie, now queen, receives Sharon Preston, Anton’s mother, who confronts her after the sudden marriage. Sharon warns Anton is still in a fragile "sensitive phase" that ends today and asks Karlie if she truly likes him, pleading, "Give him a chance." Later Anton quietly organizes Karlie's toolbox and admits he’s afraid: if he falls asleep he’ll revert to his old self and she'll hate him. He asks to stay and hold her; she agrees. The episode ends with Karlie waking cold and someone whispering, "You're awake?" then insisting, "Let go," leaving an urgent, unresolved moment.