Lee Chunhae is a 16 year old badass punk tomboy. Everyone is afraid of her except her best friend, Park Yongsook  ( Who been friends for their whole life ) . On the first day of school, Chunhae and Yongsook were running late for school, so they rush to school. While they ran to school, Chunhae accidently bump into Yang Eisoo, an kind and cute girl. When Chunhae apologize, a guy named Park Hyunshik, an cool out