Ye Won and Young Su are both seniors at high school. They need to enter the university at any cost. They make a promise to make it to the university and pursue the dreams of their life together. Though Ye Won passes the test with no problem, Young Su fails it. As Ye Won gets close with Deok Jin, Young Su loses his faith and falls into the deep delinquency. Ye Won couldn't let Young Su go astray so she decides to be with him.