When an ordinary and beautiful human girl meets a pure vampire from the Vampire clan, will there be a thrilling love, or will she be unable to escape the fate of becoming a vampire tool? '': With love as an alliance, and with the current time and life, you will be my eternal lover. ''He said. So he turned her into a vampire. Time is no longer a limit. She will accompany him and spend the warmest, hardest, most real, and cruelest time together... The beautiful vows, the most sincere feelings and love, those days of life and death together, those unconditional sacrifices and dedications, how much can be left in this cruel battle for the throne? Love... Hate... Conspiracy... Who loves whom, and who abandons whom? In this castle full of intrigues, treachery and ruthlessness, can they protect their original feelings and intentions?