Sytriaxim is a half-vampire and half-devil whose life has been overshadowed by the arrangement his parents made to marry him to the princess, who is half-angel and half-demon. When he finally turns 18 and is named heir to his father's throne, he attends his own coronation and birthday celebration with his future wife. Upon seeing her grace and beauty, his gaze is captured and their eyes lock with fascination. It's the beginning of a promising new chapter for both of them.