This story starts with when our main characters were teenagers (15 years old). Su Yeon is the girl. She is well-known around her area and is bullied at school because she is the daughter of a murderer. Students avoid her and they act as if she isn't there. They are also scared of her and humiliated of the fact that she attends their school. So she's a very quiet girl and she's never called by her real name by other students. Han Jung Woo came from the states and meets her at their neighborhood park at night. He calls her by her name leaving her stunned and as it was raining, she got him an umbrella. He just so happened to start attending her school and was going to return the umbrella when he saw a group of kids, refusing to go into a room because of the murderer's daughter. Upon seeing this, he refuses to get close to her also which hurts Su Yeon's feeling but she was expecting it in a way.
However, feeling ashamed of the way he acted towards Su Yeon, he goes to find her in their neighborhood. When he found her, he saw the victim's mother come and fight with Su Yeon's mother. He sees chaos and Su Yeon's pain that she had to deal with after what her father had done. With this, the two become close friends. He always tries to protect her from bullies buts she didn't want him to get bullied either and so she stood up for herself many times. Su Yeon and Jung Woo start crushing on each other. However, one day when Jung Woo was getting kidnapped by other people, Su Yeon ran after the people. The two people both got kidnapped. Jung Woo was beaten up and Su Yeon was raped and traumatized. Jung Woo left Su Yeon alone as he escaped to get help. Su Yeon believed that she was abandoned managed to leave also and almost got hit by a car. With this accident, the two separate and go different ways. Everyone believed that Su Yeon was dead. However, Su Yeon called Jung Woo once and it made Jung Woo realize she wasn't dead and he was determined to find her.