The story takes place in a fictional world in the 1930s. You will play the role of a college student (female lead) and follow a folk research team led by professors from our school to conduct research on the remote island of Kimmel. You rented a seaside villa for your stay. However, this journey was not as easy as you expected, and dangers followed one after another: eerie fishing villages, mysterious vampire beliefs, evil magical rituals, ancient prophecy nursery rhymes... companions died one after another, and a hidden murder case that occurred three years ago is gradually reappearing. By chance, you gained the power of a vampire. You need to collect clues, find and protect the next victim before your soul is completely consumed by darkness, until you uncover the true culprit behind all of this.