At Suk-Gu’s house, Suk-Gu tries to call Jae-Hee in Love in Disguise episode 3. But Sook-Ja stops him. She says their daughter is very busy. He shouldn’t call her. He says he had an unusual dream last night. A white horse of excellent pedigree gallops toward him. There’s a handsome knight. He jumps off the horse. He holds someone with one hand.

Suk-Gu says he’s talking about Jae-Hee. Sook-Ja is shocked after knowing the knight held Jae-Hee. She can tell that Jae-Hee is going to be in love. She wishes she will get married. But Suk-Gu says the knight was Jae-Hee. She saved a fair-skinned man who Suk-Gu doesn’t know. Sook-Ja says she wants to marry Jae-Hee to a Prince Charming. But Suk-Gu tells her that Jae-Hee will have same fate as her. She grabs a bunch of green onions, and she hits his mouth with it. She says if Jae-Hee dares to take the fair-skinned guy home, she will hit the guy’s head with the green onions.
At Yi-Jun’s house, Jae-Hee releases Yi-Jun. He falls on the floor. He blames her for throwing him away again. He says he’s going to go out. He asks her to follow him. She mentions he told her not to follow him yesterday. He asked her not to go to the second floor. He says if she wants to gain his trust, she should work hard. She swears to break his abs if she finds the evidence. She’s driven out of his room. She wants to beat him.
At Hye-Jung’s house, Si-Hyun wakes up in Hye-Jung’s bed. Hye-Jung isn’t here. He remembers she told him that he should have pretended he didn’t know her until the very end. They slept together. He smiles after he got his goddess. He walks out of the bedroom. She guesses he was very happy last night. He wonders is he already a thing of the past? She tells him that she welcomes the man who comes. But she welcomes the man who leaves even more.
Yi-Jun gets in his dressing room when Jae-Hee is helping him pick out some clothes. He tells her that he’s imagine of Taekang. He asks her does she want him to wear the flashy clothes to put on a monkey show? He asks her for his pants. But she has her back to him. She claims that she’s a clothes hanger. She thinks they should observe basic etiquette even if they’re men. He helps her tie her tie. He feels relieved after knowing she wasn’t hurt.
Yi-Jun and Jae-Hee are on the way somewhere. She says she checked the photos. She will go to look into the reporter, and she will do something. He tells her that she doesn’t have to do that. He knows who the guy was.
Na-Jung gets in her office. She asks her husband Joon-Hyun was he caught? He mentions what he said that Yi-Jun wasn’t easy to deal with. She thinks the guy didn’t do the tailing job well. She asks him to fire the guy. He says the guy is a CEO of a media. He worries that there will be a rumor that he kept an eye on his brother-in-law. She reminds him that shareholders’ meeting is going to begin. He doesn’t believe Yi-Jun would do something to his secretary before the meeting. She thinks it’s not the point who did it. The point is Chairman’s plans. Although Yi-Jun’s crisis is her chance, Chairman will do something before the meeting. Na-Jung says her father will be heartless to his children as long as he thinks he got the short end of the stick. She thinks she should go to meet Yi-Jun’s new secretary.
Yi-Jun and Jae-Hee arrive at the cemetery. Yi-Jun pays his respect to Eun-Young. Bong-Yi and his team watch Yi-Jun in the car. Bong-Yi doesn’t understand why the guy came to the place. He wants to know his mindset. Wan-Gu mentions he has taken a course in criminal profiling. He wants to act a Criminal Profiler. But Bong-Yi asks Seok-Jin what does he think? Seok-Jin says though they need to hear what the experts have to say, the perpetrator may also develop post-traumatic stress disorder. They would go to blame victims. This is the runaway reaction that things didn’t turn out the way he had planned. It can also be a form of compensatory behavior driven by guilt.
This is A typical case of high-functioning antisocial personality disorder. It can also be a defense mechanism. Wan-Gu thinks Yi-Jun feels guilty because he and Eun-Young were in love. Bong-Yi thanks Wan-Gu for his opinion. He believes that Yi-Jun will waver after he met the dead. They can spot a flaw from it.
Yi-Jun says goodbye to Eun-Young. Jae-Hee brings up that Eun-Young was Yi-Jun’s secretary. She can tell that he cares for her very much, and he came to the place in person. He says he came to apologize. He was the one who caused her to end up like this. It makes Jae-Hee wonder did he do it? Yi-Jun mentions Jae-Hee kept asking him questions. He asks her what is her goal? He thinks she should have known it when he interviewed her. She’s scared now? She worries that she will be like Eun-Young?
He tells her that she can resign if she’s afraid of it. He won’t keep her. She says she won’t resign. She wants to stay by his side. In the car, Wan-Gu hears Yi-Jun’s recording. He asks Bong-Yi to take action. But Bong-Yi points out that the evidence cannot be used at the court, according to the law. He thinks they don’t have time to wait for Jae-Hee to find the phone. Seok-Jin offers to summon Min-Hwan.
Yi-Jun and Jae-Hee return to Yi-Jun’s house. He asks her to get off work. He gets in the house. Myung-Suk tells Jae-Hee that she should stay away from Yi-Jun. She was working in her hometown. She followed Yi-Jun to move out. She can understand why he’s so cold. The family wasn’t like a family. Chairman was very strict after Madam passed away.
Jae-Hee asks Myung-Suk won’t Yi-Jun’s friends and family come? She didn’t see anyone except Si-Hyun. Myung-Suk says Yi-Jun doesn’t want anyone to come. But his eldest sister would come by from time to time. She figures she’s very busy.
In the evening, Jae-Hee practices boxing on the roof at home. Hye-Jung walks into the restaurant. She asks the restaurant owner for a bowl of hangover soup. The restaurant owner persuades Hye-Jung not to drink. She says people might think she has a story. She’s pretty. Why does she always come alone? She shows she’s very poor. Hye-Jung says everyone has a story. She knows a big secret. She points at the woman on the TV. She says she will die. She asks the restaurant owner not to snoop on others’ secrets. She dug secrets, and she lost her life.
In Yi-Jun’s bedroom, Yi-Jun has a nightmare. He calls Eun-Young. He wakes up from the nightmare. He calls Jae-Hee. Jae-Hee comes to Yi-Jun’s house. She learns that there are 10 milliliters more milk than what was left over from yesterday. She thinks it’s not a big deal. He mentions she wanted to stay by his side. He asks her to throw it all.
It flashes back. Jae-Hee tells Yi-Jun that she needs money. Nobody gives as much as he does. At present, Jae-Hee realizes that she said so. Yi-Jun asks her to watch him until he falls asleep. She realizes that she can go to the room after he falls asleep. She’s happy to take him into the movie room.
They watch a documentary together. He mentions Joan of Arc has always been dressed as a man before she’s killed. She reminds him that it’s almost dawn. She takes him to the bedroom. He talks about the Greatest Sharpshooter with her. She wants to have a fight with him. She says she will help him get a good sleep.
Jelly attacks Jae-Hee. Yi-Jun holds Jelly. He says he hates sweating most. Jelly could understand what he thought. Why did his personal secretary not understand it? It’s weird that Jelly is nice to boys. She likes Si-Hyun. She even likes Da-Woon who’s ungrateful. But she only dislikes Jae-Hee.
Jae-Hee feeds Jelly the milk. She tells her that if she keeps watching out for her, Yi-Jun will suspect her. She offers to get along well. Jae-Hee and Yi-Jun meditate. She falls asleep. He’s happy to poke her. But he says he’s dissatisfied. He puts the blanket on her.
The next day, Myung-Suk arrives at the house. She sees Jae-Hee falling asleep on the floor. She wakes her up. She asks her why is she here? Jae-Hee asks Myung-Suk about Yi-Jun. Myung-Suk guesses Yi-Jun is in the bedroom.
Jae-Hee walks out of the house. She notices that the bowl that holds the milk turns black. She realizes that the family is happening something that she doesn’t know.
Seok-Jin and Bong-Yi are looking into Min-Hwan’s house. Jae-Hee sends a message to Seok-Jin. She asks him to come to Yi-Jun’s place.
Jae-Hee catches the masked man. He tells her that he’s Da-Woon. She takes off his mask. They return to Yi-Jun’s house. Da-Woon begs Yi-Jun. He says his child needs to go to English kindergarten. If he returns home like that, he will be beaten to death by his wife. He asks him to save him. Yi-Jun mentions Da-Woon boldly threw his resignation letter at him. Now he wants to come back.
Da-Woon claims that he wouldn’t do so to Yi-Jun’s good looking face. He asks him to tear up the resignation letter. Yi-Jun mentions Jae-Hee wanted to watch him. He asks her why did she run out? She says she was on patrol inside and outside the house. Security must be extremely tight. So he could sleep well. He brings up that she fell asleep. She talks back that she did it because he woke her up in the middle of the night. The work time in the contract doesn’t include morning.
At Taekang Group, Si-Hyun runs into Hye-Jung. She ignores him. He’s very sad. She offers to have dinner together. But he says he has an appointment. She figures he will have dinner with Yi-Jun. He tells her that she’s very smart. It makes him want to cancel the appointment. He offers to have dinner together tomorrow. He will order the food she likes. She walks away.
At the cafe, Da-Woon tells Jae-Hee that he’s the first secretary, and she’s the second secretary. He’s her senior. He thinks she should share her tip with him. He asks her how did she get so close to Yi-Jun within one week? She tells him that Yi-Jun trusts him more. He agreed to let him be reinstated immediately. He says he has worked with Yi-Jun for many years. He becomes his left hand and right hand. Jae-Hee asks Da-Woon what kind of person is Yi-Jun? She lacks experience so that she doesn’t know Yi-Jun well.
Yi-Jun was born. He was educated as the successor of Taekang. He was in the position where he couldn’t shirk any responsibility. He had to live the life that he couldn’t make any mistake.
It flashes back. Chairman scolds Yi-Jun after knowing his grades weren’t good enough. He reminds him that he’s the future of Taekang. Yi-Jun tears up. He apologizes to his father. He promises him that he will act better. But Chairman asks Yi-Jun to continue to get on knees.
At present, Da-Woon tells Jae-Hee that Yi-Jun must be perfect. This is why nobody can see through him. Because he represents the company. He couldn’t be reckless. Da-Woon isn’t envy of the life. She asks him does he think Yi-Jun is very poor? He says he’s afraid of Yi-Jun. He’s not sure if he did it to Eun-Young. If he did it, he wouldn’t be reinstated. It’s a rumor that Yi-Jun dated Eun-Young. He knows the secrets of the two. Eun-Young had a crush on someone at the company. She often visited him and talked about relationship problems with him. Yi-Jun likes a special type.
Jae-Hee returns to Yi-Jun’s house. Yi-Jun guesses Da-Woon gave Jae-Hee a lesson. Jae-Hee asks Yi-Jun where is he going? He thinks he doesn’t have to report it to her with his status. He asks her did she take away the bowl in the yard? She figures he’s talking about the silver bowl. She didn’t touch it.
Yi-Jun goes out. Jae-Hee gets in the room on the second floor. She notices that the painting is crooked. She touches the painting. But the door opens. She gets in the secret room.
Yi-Jun and Si-Hyun are on the way to see Chairman. Si-Hyun brings up that Yi-Jun didn’t trust Jae-Hee. But he and Jae-Hee are close. He heard that he gave her taxi fare. Yi-Jun regrets for letting Da-Woon be reinstated. He remembers he didn’t tell Jae-Hee that the bowl was silver. He asks Si-Hyun to drive back.
Jae-Hee finds the phone in the secret room. She’s happy to tell Yi-Jun that they’re going to have a meeting in the interrogation room. She walks out of the secret room. He shows up from behind her. He thinks she cannot use reporter as her excuse. He expects what excuse she’s going to make. He asks her why did she break into the place where he didn’t want her to get in?
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He drags her to the living room. He tells her that she’s fired. He asks her to leave his house. She says she did it because what he said at the cemetery. She minded it very much. He didn’t let her get in the room because of a reason. So she wanted to confirm it. He tells her that it’s not her business that if he killed a person. She says it’s related to her because the family is happening something that she doesn’t know. She mentions the milk.
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She notices that the chandelier is going to fall. She pushes him onto the couch. She kicks away the couch. It flashes back. Da-Woon takes drunk Yi-Jun home. Yi-Jun says he likes a tough woman. Da-Woon thinks Yi-Jun should like a pretty woman. Yi-Jun points out that a pretty woman cannot support him in Taekang Kingdom. He has waited for the female knight who rides a white horse.