Queen Seirena of the Alcantia Kingdom had devoted her life to her country, guided by the words of her parents, who died when she was young. But one day, an impostor who looked exactly like her suddenly stole everything. Betrayed by her fiancé and left to die in a prison cell where no one came to her aid, Seirena was approached by King Plum of a neighboring kingdom. Revealing his true identity as an ancient vampire, he offered her a choice: “Will you become a vampire and come with me, or wait here for death?” To reclaim everything that had been taken from her, Seirena chose to form a blood contract with him.