The new K-drama, S Line, certainly has an R-rated premise and intro, but under the surface, the show almost seems to be more like a sociological experiment. Sex Line—what does that mean exactly? In this show, a few people, well, one girl and one man with special glasses, can see people’s sex lines. Now, what does this mean exactly? It’s a red line that comes out of a person’s head and connects them with the people they’ve had sexual relations with. It’s definitely an interesting storyline that’ll have you curious if nothing else, and in typical K-drama fashion, the lead of the show is a detective. Anyway, the show begins with murder, mystery, and a young high schooler named Hyeun-Heup, locked up in a room and never leaving. What’s her story, and why can’t she leave? Let’s find out in the first two episodes of S Line.
Spoiler Alert
Why Doesn’t Hyeun-Heup Leave The House?
Hyeun-Heup’s trauma comes from having been able to see people’s “S Lines” since she was born. Of course, as a child, she had no idea what she was looking at, and nobody understood her because they believed it was some childish distraction. However, Hyeun-Heup started drawing these lines, and soon her mom realized what they were. The drawings essentially proved to her mum that Hyeun-Heup’s father was cheating on her, so she killed him one day and ran away. Seeing what happened with her parents, Hyeun-Heup was quick to realize that what she was seeing was something that should never be seen. Ever since, she’s been hiding in her house and seems to have developed agoraphobia because of it. She couldn’t even kill herself, though she’s tried many different times. She even covers up her windows with cardboard boxes and wears sunglasses inside the house to avoid any sightings. Hyeun-Heup notices Detective Ji-Wook asking his niece, Sun-A, to let him drop her off at school. She refuses to go. In the meantime, the woman who lives across from her notices that she’s taken down the cardboard, making her smile and wave at her. It seems she’s a friend, because she even brings her fruit to eat at home, which she of course leaves outside the house. Seeing as Hyeun-Heup has to live on, she decides to become a detective of her own kind, a detective of the “S Line,” to find out all about these lines.
Hyeun-Heup watches the news, where she learns about a murder in her neighborhood. While watching people getting interviewed, she notices a deliveryman wearing a helmet with only one line coming out of him. This is a rare sight, and she wonders if he’s there because he’s the murderer. When she sees the same man again later, she notices him going into the house across from her. She calls the police, only to then notice that the two people are lovers, and he’s not there to harm the woman.
On the other hand, Sun-A gets bullied at school, and she has to pay her bullies. However, when she’s at home and Ji-Wook notices her bruises, she doesn’t tell him what they’re from; she simply tells him that he needs to give her money, to which he tells her that he’s not an ATM. We don’t know yet how her parents died, but Sun-A is likely an outcast because of that and the fact that her uncle’s a detective. Moreover, Ji-Wook also gets a call at work about his father, who is in the hospital, and finds that he’s standing on the roof. The family clearly has some trauma to sort out. Oh, and also Ji-Wook has had loads of partners, as is apparent from his many lines.
Ultimately, Hyeun-Heup was right about one thing: the deliveryman was suspicious, but that’s because there’s two different people wearing the same helmet. Turns out, there’s a math teacher named Jeong-Min who lives in the complex. When Ji-Wook visited Hyeun-Heup, Jeong-Min told him that she wouldn’t open the door because she never steps out of the house, even though her trash is taken out for her. But Hyeun-Heup does open the door to apologize for calling the cops with a false alarm. Now, Hyeun-Heup notices that when the deliveryman takes his helmet off, it surprises her friend rather than making her happy. This means he’s there to kill her. Hyeun-Heup is quick to think but slow on her feet, seeing as she has to leave her apartment, cross the road, and enter the other house. Hyeun-Heup even passes out from the anxiety; however, she manages to make it while the man is strangling the girl (I don’t know how he’s managed to leave the door open, but okay). The dude doesn’t even bat an eye, takes the knife from her hand, and stabs her in the stomach. The two women struggle to fight the man before Ji-Wook, who is now in Hyeun-Heup’s house across the road, shoots Jeong-Min, saving the women. As he is dying, the guy notices the lines disappearing, making Hyeun-Heup realize that he can see them too. How is this possible? Well, it’s because of his glasses, but she doesn’t know that yet.
Why Does Hyeun-Heup Go To School?
Episode 2 is likely set a little while after the incident because Hyeun-Heup seems to be doing okay after being stabbed. At the end of the first episode, she gets a message from someone who says they can see what she can see, too, and that they’ll be waiting for her at Ark High School, so that’s where she’s going now. Meanwhile, Sun-A gets bullied in class again, but this time Kyu-Ji, their teacher, stops the fight by yanking the bully off of Sun-A by her hair (how cool). Also, Sun-A has an S-line of her own, which is quite scandalous and probably also one of the reasons she’s being bullied. But finally, Sun-A finds the glasses in her locker before leaving school, meaning now she’ll be able to see the lines too. Next thing you know, Hyeun-Heup is a new student at Sun-A’s high school.
Sun-A puts the glasses on at home and notices a red line coming out of her head. She tries to touch it and realizes she can’t. When her uncle returns home, he has a concerning number of lines, which makes her scream and run out of the house. She doesn’t know exactly what they are, but I think she gets a hint when she looks at the other people. She goes to school wearing the glasses, noticing that her bully, Hye-Young, has a connection with a teacher. Meanwhile, Ji-Wook tries to understand why that man had been killing women, not able to understand the motive. He then visits his house and finds the walls covered in red lines. He later notices the guy’s glasses are missing from the evidence box.
At school, Sun-A’s on the rooftop again, but this time she stands up to Hye-Young rather than being meek. Hye-Young doesn’t back down and calls her crazy, taking her over the edge of the roof again. This time, she’s saved by Hyeun-Heup. Hye-Young wonders if the two of them are a set and grabs Hyeun-Heup and tries to threaten her on the edge now, but Hyeun-Heup grabs her by the tie and tells her that if she goes, Hye-Young has to go with her. Hye-Young starts to scream for help and gives up for the time being. Sun-A is not happy that Hyeun-Heup helped her out, but Hyeun-Heup asks her if she’s still mad at her. I wonder if this means they have a past connection.
Ji-Wook meets Kyu-Jin to ask her about the math teacher and if he wore glasses. There’s a weird energy between the two of them, and at the end of the conversation, he points out that her blouse button is undone. We already know that Kyu-Jin is inexperienced, but I wonder if there’s going to be something between these two. On the other hand, Sun-A follows Hye-Young and finds her going into a motel with the teacher . She takes a picture of them and sends it to her, but she tells her that it won’t make a difference to her; only the teacher will get in trouble. The next day, Sun-A sends the picture to the teacher, asking for 20 million won. Sun-A wants to move out of her uncle’s home and wonders if that money is enough for a deposit. Meanwhile, in school, a fellow teacher calls out a male teacher for harassing Kyu-Jin. This man is going to get hold of the glasses in the next episode, it looks like.
Out of the blue, Sun-A is suddenly happy at school, and it looks like her social life has improved in a jiffy. Hye-Young is confused by it, but some photos are going around, and they’re not of Sun-A. It looks like Sun-A’s also blackmailing more people, or at least getting them in trouble for cheating. Sun-A then goes on a date later at night with the guy who’s recently broken up with Hye-Young (scandy). But while she’s there, his glasses go missing. Turns out Hye-Young overheard a conversation between Hyeun-Heup and Sun-A in the washrooms, where they spoke about the glasses and who they belonged to before. Sun-A’s too happy about what “good” she can use them for, so she doesn’t care who they belonged to before; all she knows is that they were in her locker. Hye-Young steals the glasses, and Sun-A thinks it’s Hyeun-Heup’s doing. She tells her she’s going to school when it’s almost midnight, and Hyeun-Heup has a bad feeling about it.
At the end of S Line episode 2, Hyeun-Heup goes to school, only to watch Sun-A fall from the roof to her death. Unfortunately, she couldn’t make it in time to save her. On the other hand, Sun-A was having a conversation with the teacher, who told her not to send the photo to his family. However, the photo’s already with his wife while they’re talking. He asks Sun-A if she sent it already, but she tells him she did no such thing. We know she wants money, and that’s all she truly cares about, not getting this teacher in trouble, even if he’s doing the wrong thing. Unfortunately, there’s no way Sun-A survived that fall, which means it’s now up to Ji-Wook and Hyeun-Heup to find out what really happened. Also, I wonder if it’s Kyu-Jin who can see the lines too and asked Hyeun-Heup to come to the school. I can’t imagine it’s someone else, unless the male teacher I spoke about earlier already had a pair of the “S Line” glasses.
