A clumsy high-school girl - Oh Ha-ni - is at the bottom of her class, and she has had a crush on a popular genius, Baek Seung-Jo, ever since she first laid eyes on him.
Beak Seung Jo
Oh Ha-ni
Bong Joon-gu
Yoon He Ra
Hwang Geum-hee
Baek Soo-chang
Baek Eun-jo
Oh Ki-dong
Jung Joo-ri
Dokgo Min-ah
Chris
Hong Jang-mi
Cameo
