The Bai and Si families have an arranged marriage agreement, making the Bai family's eldest daughter, Bai Chaomu, the center of attention. Her illegitimate younger sister, Bai Shuangshuang, joins forces with their biased mother, Wang Jiayan, to covet the family fortune, steal the marriage arrangement by seducing Si Fan, and bully her. Little do they know that Bai Chaomu has already made her plans. Si Fan is gradually moved by her, and the two see through each other's disguises and learn to trust one another. In the end, the villains suffer the consequences of their own actions, while the two join hands to embrace a new life.