Today is righteous Chae-young’s first day of her transferred school after beaten a bully to nothing. Despite the dad’s warning, she saves her classmate Jong-gu from bullies again. Fascinated by her, Jong-gu asks how to be strong like her.

Siwoo, a high school student, is timid and fragile. His only hobby is taking a picture of his daily life with a camera. However, Ha-joon and his hobby, motorcycle, come to Siwoo, who nobody is interested in. "Break" begins to occur in Siwoo's daily life.