At the hospital, Min-Jae undergoes a physical examination in Between Steps episode 1. He loses a leg. The doctor fits Min-Jae with a prosthetic limb. Min-Jae takes a walk. He thinks he’s fine. But he worries about his cancer. The doctor suggests that Min-Jae should eat well and exercise more. He’s no different from anyone else.

Min-Jae calls Han-Gyeol. But Han-Gyeol doesn’t pick up Min-Jae’s phone. So Min-Jae texts Han-Gyeol. He asks him if he and Tae-Ho complete the Finite Elements report. But the two haven’t started it yet. Han-Gyeol doesn’t know how to text Min-Jae back. Tae-Ho volunteers to do the job. He texts Min-Jae. He asks him to say something sweet.
Min-Jae takes a train. He has a seat, and he reads Slam Dunk. You-Jin leans her head on his shoulder when she falls asleep. He pushes her head away. But she leans on his shoulder again. He leans on her head in the end. She wakes up, and she gets out of the train. He follows her out of the subway station. She runs and she trips. He runs to her. She checks her shoe. Her heel is broken.
She finds a place, and she has a seat. Her leg was hurt. He hands over his handkerchief to her. He asks her to wipe the silt and dust off the wound. If she doesn’t do it, her wound will become infected. He takes over the shoes from her. He snaps off the heels. She points out that another shoe isn’t broken. He explains it to her that her two legs must be the same length so that she can keep her balance.
She wears her shoes. He tells her that the bus is going to come. He asks her not to run. Because she will trip again if she runs. She smiles. She thinks he’s a good man. They get on the bus. She has always kept an eye on him. He gets off the bus. She avoids his eyes. She realizes that she didn’t return the handkerchief to him.
You-Jin gets in the classroom. She gives ten hats to Young-Soo. She mentions she was asked to make five styles. He says she’s first place in the department. She’s really different. He asks her to go to visit the professor Mi-Ran. Mi-Ran summoned her. You-Jin walks away.
Young-Soo asks the girl Su-Bin why did Mi-Ran call You-Jin? She reveals You-Jin wants to join Mi-Ran’s research lab. He asks her why didn’t he know it? He thinks she should have talked it over with him first. She explains it to him that because it’s not yet determined.
In the dormitory, You-Jin dresses her wound. She tells Su-Bin that the guy wasn’t handsome. He was tall and he had a good shape. He got off the bus at the College of Engineering. Su-Bin wonders why has she never seen him before? She thinks it’s a love at first sight. You-Jin denies it. She just wants to thank him. Su-Bin says it’s fate if You-Jin runs into the guy again. You-Jin disagrees. She mentions the guy and she are in the same school. It’s just a coincidence even if she runs into him again. After all, she’s going to graduate. Su-Bin persuades You-Jin to study the research lab with her.
You-Jin visits Mi-Ran. Mi-Ran welcomes You-Jin. You-Jin tells Mi-Ran that her parents don’t go against her to study the research lab. But she thought she should have worked early. After all, she needs to pay the tuition. Mi-Ran mentions You-Jin has been the first place in the department, and she has gotten scholarships. So You-Jin doesn’t have to worry about it. The research lab will provide scholarships to outstanding students as well.
Mi-Ran tells You-Jin that she didn’t recommend her without a reason. She thinks she’s better suitable for an academic career. You-Jin says although her grades are pretty good, she has never won a prize in any design competition. It doesn’t work no matter how hard she tries. So she thought did she lack a talent for it? Mi-Ran tells You-Jin that she was just unlucky. The talent will show later in life. She thinks she’s like her when she was young.
She had the same worry when she was in her college. All the classmates were outstanding. They went to compete, and they could win an award. But they left the circle in the end. Mi-Ran tells You-Jin that she needs a successor. She will lead her well.
Young-Soo walks into the office. He reports it to Mi-Ran that Reporter Lee came. Mi-Ran reveals she’s going to be interviewed. She asks You-Jin to help her. You-Jin agrees. But Mi-Ran notices that You-Jin wears slippers. She has a fight with Reporter Lee. She wants to show her warmth and presence when she sits on the hats.
In the cafeteria, Min-Jae has dinner with the team members. He asks them to achieve some results. But they wish they will have girlfriends. In the evening, Min-Jae writes down his wish list in the dormitory. He texts Seo-Hyun. He asks her what is she doing? She calls him. She says she’s going to get off work. She’s very busy. He mentions he hasn’t seen her for a long time. He wants to have a meal together.
The next day, Min-Jae goes to the flower shop to buy flowers. He chooses red roses. Su-Bin comes to the flower shop to take the flower basket. Min-Jae leaves the shop when You-Jin gets in the shop. She runs out of the shop to look for him. She returns to the shop. Su-Bin asks You-Jin does she know the guy? You-Jin shakes her head.
Su-Bin gets a call from Young-Soo. You-Jin dislikes the guy. But Su-Bin says Young-Soo isn’t a bad person. At the bakery, Young-Soo buys some bread.
At the restaurant, Min-Jae waits for Seo-Hyun. He gets a call from her. He waits for her at another restaurant. She shows up. He takes a photo of her. But a guy walks into the camera. Seo-Hyun introduces the team leader Yoon-Soo to Min-Jae. She tells Min-Jae that they’re very busy because they need to launch a lot of products. He sees the robot. He thinks it’s very good.
Yoon-Soo brings up that Min-Jae and Seo-Hyun were high school classmates. They studied at the same college. Min-Jae reveals he was accepted into the college after he took the exams four times. So he almost didn’t run into Seo-Hyun at the school. Seo-Hyun says she’s the senior. Min-Jae should respect her. But because they attended the same high school for a year. It puts her at a disadvantage. He points out that he called her senior. Every time she’s drunk and she vomits. He cleans the mess for her. Yoon-Soo asks Seo-Hyun did it happen? She denies it.
At the Teacher Appreciation Banquet, Mi-Ran gives a speech. She tells the students that they will make their dreams come true if they’re humble. She announces Young-Soo is going to go to Nagoya University to serve as an assistant professor. He thanks her.
Seo-Hyun brings up that she and Min-Jae promised to save each other if they didn’t get married after they were over 40 years old. She thinks he cannot get married. She asks him about his plans. He admits it to Yoon-Soo that he’s single. Yoon-Soo doesn’t understand it. Min-Jae is very handsome, and he’s a doctor. He should be liked by many girls. Yoon-Soo figures Min-Jae is too picky.
Seo-Hyun tells Yoon-Soo that Min-Jae rejected it all when she wanted to introduce her colleagues to the guy. Yoon-Soo guesses Min-Jae doesn’t like blind date. He would like to know the girl naturally. She says Min-Jae should go out and know some girls. Min-Jae didn’t do anything.
Yoon-Soo goes to pay the bill. Min-Jae wants to pay it. Seo-Hyun thinks Min-Jae is broke because he’s studying. Yoon-Soo should pay. Min-Jae claims that he has money. He asks Seo-Hyun is she dating the guy? She denies it. He thinks it’s important that a man is kind. She says Yoon-Soo is very kind. If he thinks Yoon-Soo is good, she will try to date the guy. He tells her that he thinks the way she does. She can date the guy. She goes to drive the car over here. She asks him to come out when she calls him.
In the room, Su-Bin asks Young-Soo will he go to serve as the assistant professor. He says he will go to the school next semester. The case was decided suddenly. He’s not ready for it. She guesses he must be very busy. She pours him a drink. She congratulates him.
Outside the restaurant, Mi-Ran thanks Su-Bin and Young-Soo for preparing for the event. Young-Soo gives Mi-Ran the bread that she likes. He tells her that she can eat it when she’s hungry. She hits him. She thinks he’s thoughtful. She leaves.
Young-Soo invites Su-Bin to have a drink with him. But she reminds him that he’s drunk. She wants to go to ask You-Jin about it. He says he wants to go with her alone. You-Jin walks out of the room. She hears Su-Bin’s scream. She takes down Young-Soo. She asks Min-Jae to call the police.
In the police car, You-Jin thanks Min-Jae for his help. He asks her was she hurt? She denies it. At the police station, You-Jin asks the policewoman do they need to hire a lawyer? The policewoman tells You-Jin that she’s a witness. So she doesn’t need a lawyer. You-Jin asks the policewoman to sentence Young-Soo to the harshest punishment. Keep him locked up forever.
She got in the room. She saw Young-Soo push Su-Bin against the wall. He wanted to kiss her. Su-Bin said she didn’t want it. But he still tried to force it. He held her hand down, and it made her not be able to move.
You-Jin tells the policewoman that Min-Jae is the witness. He was with them. She asks Min-Jae did he see it? He says he didn’t see it. The case was over when he came over. Su-Bin’s friend took down the guy soon. She sit on the guy who fell down. But he heard a girl’s scream.
Su-Bin, You-Jin and Min-Jae walk out of the police station. You-Jin asks Min-Jae why didn’t he see it? He explains it to her that she took control of the situation soon. She thinks he should have said that was probably how it went. He says he should tell the truth. If he said something wrong, he would be guilty of filing a false accusation. She asks him is he taking the jerk’s side? He denies it. He says he must clarify the facts and relationships.
She remembers he was taking photos. She wants to check it. She guess he might have take a photo that can be evidence. He says he just took photos of the robot. He refuses to let her check his phone. He thinks she’s rude. He asks her to go to apply for search warrant if she wants to do it. He mentions he just saved her. But she says she swam ashore on her own.
Su-Bin passes out. Min-Jae volunteers to help the two girls call a taxi. But You-Jin claims that she can do it on her own. She doesn’t need his help. She asks him to get lost.
You-Jin takes Su-Bin home. She takes care of her. She gets a call from her mother Mi-Young. She tells her that she must sleep at Su-Bin’s place because Su-Bin is sick. But her brother You-Seong guesses Su-Bin drank too much, and she has a hangover. But Mi-Young doesn’t believe that Su-Bin would have a hangover. Because she and the students went to thank the teacher.
Mi-Young thinks she didn’t give birth to You-Seong. Because he’s not smart like her. Yong-Seok tells You-Seong that his first love in the high school gave birth to him. You-Seong figures the first love is his biological mother. But Yong-Seok says Yong-Seok’s mother was his first love. Min-Jae is at home. He deletes Seo-Hyun’s photos.
The next day at the hospital, Mi-Ran breaks into the ward. She beats Young-Soo. You-Jin cooks a bowl of porridge. She visits Su-Bin. But Su-Bin doesn’t open the door. You-Jin tries to text Su-Bin. But she gets a call from Mi-Ran.
In Mi-Ran’s office, Mi-Ran asks You-Jin to go to the hospital to apologize to Young-Soo. No matter what happened, You-Jin shouldn’t have beaten the guy. Mi-Ran reminds You-Jin that Young-Soo is her senior. But You-Jin knows Young-Soo isn’t a good senior. Mi-Ran admits that the guy drank, and he made a mistake. She isn’t saying that he wasn’t wrong. But they’re all alumni. So You-Jin should skip the mistake. But You-Jin thinks it was a crime.
Mi-Ran disagrees. She thinks it would happen between lovers. You-Jin figures Young-Soo said they were dating. She tells Mi-Ran that the guy lied. Mi-Ran tells You-Jin that Su-Bin said it. She said You-Jin and Young-Soo didn’t get along very well. So she didn’t tell it to You-Jin. Su-Bin is easily moved, and she’s kind. She endured it for You-Jin many times.
Mi-Ran asks You-Jin to let it go. But You-Jin cannot do it. No matter Young-Soo and Su-Bin dated or not, it’s the bad thing that Young-Soo should have done. He deserves to be beaten. She doesn’t want to apologize. She thinks Mi-Ran isn’t like a teacher. It’s the teacher’s duty to tell the student what’s the right thing when he makes a mistake. You-Jin asks Mi-Ran is it more important than the school’s reputation and her face?
Mi-Ran tells You-Jin that she’s very smart. She cannot teacher her and lead her. She’s not her student because she doesn’t listen to her. She lets her leave her office. She asks her not to mention her name and the school no matter where she is. You-Jin asks Mi-Ran is she threatening her? Mi-Ran laughs. She thinks it’s not a threat. Because You-Jin is so sharp.
You-Jin knows the circle is very small. She confesses it to Mi-Ran that she’s afraid of it. But she thanks her for giving her a lesson. She bows to her, and she leaves her office.
At the art museum, Ji-Hoon reminds You-Jin that she shouldn’t eat at the place. She claims that she’s not a student here. She has graduated. She doesn’t have to be afraid of someone using credits to threaten her. So she plans to do the things she wants to do. From then on, she lives a carefree life like duckweed.
She asks him what does he think of the painting? She thinks it’s beautiful and creative. Her sense of aesthetics isn’t bad. But it’s hard to express emotions with clothing. She knows what she wants to express, but she cannot present it well. She can only imitate others in the end. But these are excuses. She doesn’t have the talent to be artist or creative director. So she doesn’t have to blame anyone.
Min-Jae takes You-Jin to the robot company. He tries to get the evidence through the robot. But it’s not helpful. He apologizes to her. But she apologizes to him instead. She thinks it won’t work even if she has the evidence. She heard that the guy and Su-Bin were dating. He thinks the guy shouldn’t have done that kind of thing. She says it’s weird that Su-Bin concealed the dating from her. But he says it’s possible Su-Bin did that. She would have something that she didn’t want to say even if they were good friends. Everyone has secrets.
She says she doesn’t have any secrets. He mentions she has graduated. He suggests that she should forget the unhappy thing. She should follow her own path. His major is Mechanical Engineering. He’s studying the doctor lesson in the field of robotics. He hasn’t earned a degree. He’s still a student. He chose the major because of Slam Dunk manga. He suggests that she should read it if she has a chance.
The bus comes. He doesn’t get on the bus. Because it won’t go to his home. She gets on the bus. She tells him that they encountered at the bus stop. He says he likes her very much when the bus is leaving. She doesn’t hear his confession.