The first, spanning only the first volume of the manhwa, centers around the high school girl Tae Yeon Im and her obsession over a handsome model named Kun Kang.
She makes a deal with Jung-Woo to trade places so she can get closer to the model of her dreams, though they settle on only one week for the switch.
However, upon arriving at Pure Water High, she promptly gets beaten up by the gang member Ga-Woon Kim, apparently Kun Kang's closest friend.
The story now concentrates on the beautiful girl Que-Min Ghun, who although appearing innocent at first glance is actually incredibly strong.
She attends the same school as Jung-Woo and after meeting him one day in the street, starts to develop a crush on him, going as far as trying to protect him from people like Ghoon-Hahm Che and his gang, the Yi Won.