Kim Jieun, the 4th pure child of the K.M.J corporation has just turned 17. Knowing that she would have no reason what so ever to inherit her family's company she leads a simple life. Dedicated to living a wild life without being rebellious. Jieun had went around the world with her older sister and younger brother. When they finally return home they go back to schooling, however not everything goes as planed. When she arrives back in school a new boy group roams the school grounds taking girls hearts.