Li Xingyue was attacked by her father and stepsister. She lost her memory and her appearance was ruined. However, on her wedding day, she regained her memory. She pretended to be stupid to take revenge on her fiancé and stepsister. Gu Mohan was dragged by his grandmother to the wedding and was mistaken for the groom. During their time together after marriage, Gu Mohan found that the necklace she wore was related to the girl who was his first love and whom he saved in his childhood.