Our story opens at your local high school, where you find yourself in your senior year and attending classes alongside a mysterious girl who has transferred in. Over time, you notice that the girl shows some eccentric behavior and has an aversion to the sunlight, all while she seems to have a strange fascination with you. As you unravel her mystery, you discover that she is a vampire and has developed feelings for you, even as you come to face the danger of being her next snack.