Cha Bo Na, Ha Joon Ah, Ong Sung Woo, Jeon Jung Kook and Kim Taehyung were the known to be the naughtiest kids in a small village in Busan. The 5 kids were besfriends as long as they could remember but when they turned eight, Bona and her brother Eunwoo had to migrate to the city of seoul to live with their uncle.  8 years later;

Upon finding out that she would be enrolling at her dream university, Yoon Nara decided that she would rent an apartment for her first semester of studying at the prestigious Seoul National Univesity,