In her previous life, Cheng Qinghuan was murdered in a fire set by her stepmother and cousin. Reborn after saving Madam Shen, she makes a bet by predicting an assassination attempt on Shen Xubai and enters into a contract marriage with him, using his influence to exact her revenge. She switches the bird's nest soup to make Chen Wenjing humiliate herself at a banquet, then exposes Wang Man's affair with DNA evidence and drives them both away. After uncovering the truth about her own identity, Cheng Qinghuan and Shen Xubai finally find their happily ever after.