Sangchan is a girl working in a factory who falls in love with an attractive guy named Rawee. As Rawee has to go study abroad, he keeps a promise of coming back to see Sangchan on October, 8th of each year. While Rawee is away, Sangchan who anticipates to see him has a chance to befriend to Lim, another guy who admires her. Now it is the test of love, faith, and vow that Sangchan has to make through.