Lin Jiuer, the daughter of the Lin family, returns to China to investigate the past incident of her mother's disappearance, and is arranged by her stepmother to enter a contract marriage with Su Muchen, the CEO of the Su family. With their own hidden thoughts, the two gradually develop feelings for each other while probing one another. As the investigation progresses, the truth of the car accident twenty-five years ago is uncovered: the accident back then was deliberately planned by the stepmother, and Lin Jiuer's mother survived and lived in seclusion; Su Muchen is actually Song Zhiheng, the son of the missing designer Song Tingzhou. Once the truth is ascertained, those responsible are punished according to the law, and the two finally reach a happy ending.