Areum fell into a strange world called “Solter” after a car accident. She is mistaken for a vampire because of her hair color, and the slave shop sells her to the ducal house. The identity of Millard Travis, the lord of the duke’s house who bought her, is the only vampire in the world! Desperate to survive in any way, Areum becomes Millard’s direct servant and promises to serve him as her master. Areum tries Millard’s belly day after day and his attitude begins to change.