Sandpiper, a 16-year-old high school girl, visited her grandma's house in the countryside during summer vacation and accidentally found a novel written by her deceased grandfather. However, the novel did not have an ending. Sandpiper was very worried about this matter. One day, she accidentally obtained a charm and strayed into the demon world. With the help of her grandfather's friend Xuanyuan Mingjing, she gradually gained a growth story.