After being caught in a car accident, Areum finds herself in a very strange world instead of dying. This world is called Soltera, and she is mistaken for being a vampire due to her hair color. But that is not the worst thing. The worst thing is that she is sold to the Duke’s house by a slave trader. Millard Travis, the owner that has bought her home, is the only vampire in the entire world. Areum’s responsibility here is to become the direct servant for Millard and swears to stay loyal to him and consider him as her master. After every day of interacting with each other, Areum and Millard relationship changes.