Summary:
Growl High School is a well known high school in Busan, South Korea. The majority of students are children of the companies or large corporations. If not, the minimum must have a close relationship with the family tycoon. The founder of the school is a line up they Park. He had a son named Park Chan Yeol.
*Park Chan Yeol: a genuine badboy, always think if disruptive roles that his father must give up.
*Byun Baek Hyun: a normal boy but an excellent student. His family belongs to the wealthy but thanks to his outstanding academic so he can in this school.