Ye You is a sophomore student in the Department of Biology at Yannan University. Although he usually lives a casual and casual life, he is actually an enthusiastic person. In his freshman year, he joined a club, the Fantasy Club, under the motivation of his roommate Ji Tianzhen, and began to become interested in fantasy culture such as myths, legends, monsters, and monsters. But what Ye You never dreamed of was that on the first night of her sophomore year, a monster that existed only in legends lay dead in front of her eyes. A handsome freshman whom she had only seen during the day stood next to the corpse of the monster, with one hand dripping blood. Ye You knew that his 19 years of ordinary life was over.