An eternal quest for his true love, against the clock… To keep their centuries-old vow. Five hundred years ago, a vampire prince and a girl fell in love. However, the girl was only human, with a human life-span, and she eventually passed on. In sorrow, the prince searched for a way to turn himself back into a human, to avoid feeling that pain again… Current day, and the girl has been reborn into a peaceful life, and the prince has found a way to “return”… A romantic concerto is about to begin!