On the first day of school, Lin Xingchen was warned coldly by the student union president Gu Huaizhi: "You are blocking my light." Turning around, she discovered that this arrogant man turned out to be her fiancé - the one with amnesia. In order to pay off her grandma's debt, she signed a couple contract and acted as a loving couple in school. He fed her, took care of her, and stayed with her all night long when she had a fever. She always reminded herself that she was just acting, but she didn't know that his amnesia was fake, and chasing her again would be real.