Kang Jihyeon is a transfered student at School Of Performing Arts (SOPA). Her cousin, Jeon Jungkook is a part of a very popular group called "The Bad Temptation". One day, the Flawless Group they an audition at their school campus for vocalists. They suddenly heard a girl singing at the back of the campus. Who is this girl? What will the Flawless Group do?