Go Hea-Jung is a heavy overweight girl who everyone makes fun of at school.Eventhough she is not the prettest girl on campus, she is smart,nice,and clever. One day she bumps into the school's most handsome and smartest guy,Yoo Dae-Ho on the campus.After a couple of incidents,she falls inlove with him.He doesn't know at first but he slowly starts to accept her for who she is.As their relationship starts to grow,their are people who don't want the two odd couple to be happy just yet.

Kim Na-Young lost her father to loan sharks because they couldn't pay for their own house.This happened to her when she was five years old.Right after that tradegy,she had gotten in an car accident from not looking both ways while crossing the streets.Eleven years later,she is at Jawoon High School as Song Sa-Eun with her adopted brother Song Sa-Hun,who is the school's most handsome,smart,and funny student.Soon,she starts to ask her parents who she really is and is she her parents own