Yeon-Du suffers from Jin-Su's tiresome stalking. While wondering how to get rid of this stalking, Yuna and Yeon-Du come up with an amazing idea and change her SNS profile picture to a picture of a man. Yeon-Du doesn’t know if that photo is of Hyun-Ho.

Yeon-Du unintentionally becomes involved with Hyun-Ho's group. As an apology to Hyun-Ho, she offers him up as a bread shuttle. Joo-Ho gently comforts Yeon-Du. Yeon-Du wonders why Joo-Ho hangs out with such a group. And by chance, Yeon-Du sees Joo-Ho's double life.

Yeon-Du, who finds out about Joo-Ho's double life, promises to keep it a secret for Joo-Ho. The next day, Hyeon-Ho and Yeon-Du are late together and climb over the wall without the teacher knowing.

Hyeon-Ho gradually changes due to Yeon-Du. Even his hair color is dyed black. Even a war of nerves begins between Hyeon-Ho and Joo-Ho with Yeon-Du in between. Seeing this, Seol begins to become jealous of Yeon-Du.

Jin-Su's never-ending stalking continues, and Jin-Su appears in front of Yeon-Du on her way home from school late at night. Jin-Su forcibly grabs Yeon-Du's wrist, and there was someone who showed up to save Yeon-Du.

Yeon-Du, hurt by Seol's words, goes on an unreasonable diet and eventually collapses. When Seol sees Joo-Ho nursing next to Yeon-Du, her jealousy grows even stronger.

Hyun-Ho's feelings for Yeon-Du grow bigger and bigger, and Hyun-Ho himself feels that his feelings are becoming more and more certain. Meanwhile, Jin-Su's group of soldiers appears in front of Yeon-Du, and Joo-Ho appears to save Yeon-Du.

Yeon-Du and Hyeon-Ho, who are in danger from Jin-Su's friends, appear and save them. Yeon-Du feels uneasy when Hyun-Ho gets injured while saving her, so she goes to Hyeon-Ho's house.

Hyun-Ho and Joo-Ho's feelings for Yeon-doo are growing, and Seol's jealousy is growing. Seol is increasingly harassing Yeon-Du, and Joo-Ho, seeing Seol like that, turns around in disappointment.

Joo-Ho realizes that he misunderstood Seol, and goes to see Seol, who is crying alone, and apologizes. On the other hand, Yeon-Du tries to stay away from Joo-Ho because her misunderstanding about him cannot be resolved.

Hyeon-Ho and Yeon-Du go on their first date. As they spend time alone, they get to know each other little by little.

Hyeon-Ho, who studied hard at Yeon-Du's request, gets 100 points on the written test for the first time in his history. After being happy for a while, the teacher starts to suspect that he copied Joo-Ho's test paper, and Hyeon-Ho can't stand it anymore and runs out of the classroom.

Yeon-Du’s surprise birthday party held at Joo-Ho’s house. They all get together and have a good time, and Hyun-Ho and Joo-Ho apologize to each other and make up. And Yeon-Du and Seol begin to clear up their misunderstandings.

The school festival begins. Each friend is busy preparing for the festival. Seol's friends locks Yeon-Du in an empty classroom, and Hyun-Ho and Joo-Ho struggle to find Yeon-Du.

Hyeon-Ho visits Yeon-Du first. Hyun-Ho comforts Yeon-Du by patting her shoulder when she is scared. In their private space, Hyeon-Ho confesses to Yeon-Du. I like you.