Trembling and sopping wet from the rain, Ha-won enters Sky House carrying her mother's urn. Bodyguard Lee wordlessly drapes his jacket over her shoulders and leads her to her room.
Ha-won sits in a tub filled with water, still in her clothes. She numbly reflects on the revelation that she's not the child of her father before submerging herself in the tub, as if to wash away the miserable truth.
All three grandsons are gathered in the living room, and Bodyguard Lee relays Grandpa's orders: "Ms. Eun Ha-won will be living here at Sky House with you all, beginning today."
Naturally, this takes them all by surprise. Hyun-min has qualms about Ji-woon living at Sky House because he didn't want to live here in the first place, but Ji-woon retorts that it's also nonsensical for Hyun-min to live in the same house as his fiancée. Seo-woo's discomfited by the idea of living with a girl.
Bodyguard Lee makes clear that dating is absolutely forbidden in the house, which confuses Seo-woo since he believes Ha-won and Hyun-min are actually engaged. Hyun-min pulls Bodyguard Lee aside, away from his cousins, and convinces him to let the others continue to believe that the engagement is real since it's "safer" that way.
Bodyguard Lee is unconvinced, but Hyun-min promises that he can stop them from breaking the rule and even vows to give up all his credit cards should anything happen. Bodyguard Lee acquiesces and resumes the meeting.
Bodyguard Lee emphasizes the no-dating rule, with Hyun-min chiming in that he's the exemption, even though Seo-woo points out that he's the most dangerous.
After bathing, Ha-won enters her spacious and elegant bedroom. She places her mother's urn underneath her vanity, and reassures her mother that this is only a temporary spot. The sound of Ha-won's empty stomach disrupts the moment.
Bodyguard Lee stops Ji-woon in the hallway and reminds him that he's now chosen to live as Kang Ji-woon, but Ji-woon corrects him by saying that he was coerced to live as a Kang. Bodyguard Lee doesn't understand why Ji-woon's trying so hard to live as Han Ji-woon, but Ji-woon replies that he only returned to Sky House to find out the sort of man his father was, the man who abandoned him and his mother and forced him to live as a Han.
Ha-won opens the fridge to find some food, but is stopped by MS. BEOLGYO, a no-nonsense housekeeper who wonders why Ha-won is sneaking around. Ms. Beolgyo warns her that the boys will give her a hard time if they find her like this, so she leads Ha-won to another space that's much cozier and less luxurious. Ha-won comments that she actually prefers this place over Sky House.
Bodyguard Lee appears and is surprised to see Ha-won in Ms. Beolgyo's quarters. He chides Ms. Beolgyo for mistaking Ha-won as the new help when she's really the Chairman's special guest. The housekeeper apologizes profusely, but Ha-won isn't offended and tells her not to worry.
Bodyguard Lee walks Ha-won back to Sky House. Ha-won thinks he was too harsh on Ms. Beolgyo, especially since she's much older than Ha-won, but Bodyguard Lee repeats that everything he does is the Chairman's command; all the estate's employees must treat Ha-won with reverence whether she likes it or not. Suddenly, Ha-won's stomach growls.
Bodyguard Lee expertly whips up four main dishes for Ha-won. She excitedly digs in, and gives him a thumbs up for his culinary expertise.
After dinner, Hyun-min reminds her to act like they're still engaged. Ha-won scoffs, but he insists it'll be safer for her that way since she's the lone girl living in a house full of guys.
She asks him to raise both hands, and he complies. Ha-won swings at him, but Hyun-min dodges and catches her instead. He smiles at her surprised expression and reiterates that he'll protect her. She then runs into Ji-woon who pointedly asks her how much money she accepted this time around.
Ha-won tries to get comfortable on her new bed, but she's restless. She remarks that Ji-woon is a jerk, Seo-woo actually makes her feel at ease, but Hyun-min is a playboy who gets on her nerves. She notes that she's not crazy enough to even consider dating any of them. (Girl, you say that now...) Ha-won moves from the bed to the space underneath her desk and sleeps there, finding comfort in the small space.
Ji-woon and Hyun-min are both out for a nighttime stroll, and as expected, tensions flare when the two run into each other on the same path. Hyun-min wants to know why Ji-woon returned to Sky House, and Ji-woon suggests they see as little of each other as possible. The two go their separate ways, and Ji-woon stops before a solitary entrance.
He pushes past the overgrown shrubbery and slides open the door to a dusty room; a large tarp covers everything inside. Ji-woon muses that the space hasn't changed one bit, and unearths a photograph of himself as a child with his mother. It brings tears to his eyes, and he's reminded of his mission to find out why he was forced to live as Han Ji-woon.
The next morning, Ha-won steps out of her room and realizes that her blinds were open the whole night; the inside of her room is completely visible from the outside. Adding to her shock is the fact that Ji-woon and Hyun-min's bedrooms are on either side of hers. She's surrounded on all sides! So much for privacy.
While Ha-won explores Sky House in broad daylight, the estate's employees are busy maintaining the compound. Ha-won is amazed by the extensive breakfast spread (I spy a lobster for breakfast). She sits herself down at the table and waits for the others to arrive.
Bodyguard Lee informs her that none of the cousins will show up; the three of them have yet to dine together, so Ha-won should go ahead and feast. A video call comes in from Grandpa, who greets Ha-won with an "Aloha!" while clutching a cocktail. He checks in from Hawaii to see how her first night at Sky House was, and gives her her first mission, which is to have all three cousins eat together.
Bodyguard Lee presents Ha-won with the contract Grandpa drew up, detailing how missions work. For every mission successfully completed, Ha-won will receive a bonus that will be proportional to the mission's difficulty. If she fails the mission, she must leave Sky House. And for the 427th time, he adds that dating in the house is strictly forbidden.
Ha-won's "father" warns his Stepmother not to let Ha-won in when she comes crawling back. Stepmother timidly asks if his previous wife really did cheat on him, but he angrily cuts her off. Once inside his truck, he receives a call from a person who saw his missing person flyer and knew the person in question; they arrange to meet. The flyer features Tae Kwon Do Master KANG YOUNG-JIN who used to live at Yeongak Apartment, Unit #308 in 2006. Ji-woon's daddy, is that you?
Bodyguard Lee pays Stepmother and Yoo-na a visit in order to collect Ha-won's belongings. They're shocked by his Haneul Group affiliation, along with the fact that the Chairman personally invited Ha-won to live at Sky House.
Back at Sky House, Ha-won beams at her contract before putting it away; she feels as though she's about to do some extraordinary work and is eager to get started. "What's so hard about getting them to eat together?" Ha-won remarks. She looks around the living room and notices there's no trace of a single-family photo in this huge house.
Just then, Seo-woo surprises her with a bouquet of dried flowers, the white rose bundle for her mother that she had been searching for. She's grateful for his gesture, and he takes a seat beside her. He wonders if something happened to her last night since she seemed upset, but she chalks it up to her getting caught in the rain.
He assumed something happened with her family "just because," which leads Ha-won to realize that Seo-woo had deleted her text messages on purpose, and not inadvertently like he said he did. Seo-woo tries and fails to backpedal, and Ha-won muses that Yoo-na's text messages must've been particularly nasty for him to have done that.