Hyuna is a chubby girl who hates herself for being fat. She is constantly depressed about her weight and only lives for her uncle and her music. She meets Yoseob in the music room after school and instantly become friends with him. 

A pure innocent love is developed between them.......But what would happen if Yunho, Yoseob's older stepbrother and Hyuna's first love bullies Hyuna about her weight and is also in love with her.......?