An eternal search against the cycle life, for a promise made 500 years ago that will not be forgotten. What will happen when a common girl meets a vampire prince? How will the innocent girl choose between her childhood friend and the blood-sucking prince? 500 years ago, a vampire prince fell in love with a human girl. The mortal girl died while the immortal vampire lived on. The heartbroken vampire finally found a way to become human. So our story takes place in modern times, where an ordinary girl is living an ordinary day until the aforementioned vampire disrupts her otherwise peaceful life.