Kang Ji Yeon, a sweet girl but smart-elec. She has a crush on her beloved best friend since the second grade, Park Yoo Hwan. Unfortunately, Ji Yeon's idiot, Yoo Hwan, is in love with the prettiest girl in highschool, Lee Hee Young. Hee Young is a kind, pretty, and generous girl. Almost every guy in school has a crush on her. Choi Sulli is also Ji Yeon's best and loyal friend. She has a crush on the new guy in school, Choi Minho.