Bang Yongguk, 18 years old and is a popular 3rd year student with his three best friends. Yongguk loves to rap freestyle and he loves to do it with his friends. His three friends are Pyo Jihoon who is in 2nd grade, Woo Jiho who's in the same year as Yongguk and Park Chanyeol who is in his music class. Yongguk is drawn towards a certain freshman girl, not because of her looks but as well as her personality and how she treats others around her.

Leticia, a 16 year old freshman at Nabi High School. Her two best friends is the noisy Bang Cheolyong and Kim Hyuna. She's lively, pretty, socially friendly and talented at everything ... maybe except for one thing, hiding her feelings towards her crush; Bang Yongguk. She's drawn to his deep voice and his gummy smile.