The heroine Yan Yan is a high school student. She went to visit the comic exhibition for the first time that summer. When she and her friend Su Ge were preparing to go home, she saw a boy cosplaying Sesshomaru, the anime character she had loved since childhood. Yan Yan couldn't restrain her excitement and took more than a hundred photos at once. But who knew that this boy was her classmate for the next three years, Shangguan Haoxuan, and their interesting story was about to begin.