Su Ningning and Gu Yuhan have a flash marriage, and after registering their marriage, Gu Yuhan goes abroad. A year later, he returns to the country and encounters Su Ningning, who is being bullied at a hotel. He heroically saves her, but neither of them recognizes the other. Gu's grandmother secretly supports their relationship. Su Ningning faces harassment from Jiang Wan and even has her identity impersonated. In the end, the truth is revealed, and Su Ningning and Gu Yuhan have a perfect ending.