Vaelora, the eldest pureblood vampire daughter, has been in love with her fiancé Aurelian for three years and is about to seal their eternal blood oath. Her mother suddenly confesses that Aurelian was originally reserved for her younger sister, and Vaelora only served as a tester to vet a suitable partner for Evelith. Since childhood, their parents dote on the younger sister extremely. All hardships and trials fall on Vaelora, while all superior resources go to Evelith. H
