Ji-Woon and his childhood bestfriend, Yun-Jin-Lee, become separated once Yun-Jin Lee moves to Seoul, Korea to join the K-Pop industry and become a great K-Pop star in the popular group, NOON-A. Every Valentine's Day, Ji-Woon spends a day alone, our of school because he never seemed to find a partner. But, What will Yun-Jin Lee do?