Shen Xianyu, the legitimate daughter of the Duke's household, was kidnapped as a child and raised in a coffin shop. Born with the ability to see misfortune, she was sold at sixteen to Prince Su's residence as a bride to bring him good fortune. She initially planned to escape, but on their wedding night, Gu Chengyuan, critically ill and out of control, gave her ten thousand taels of gold. Determined to repay his generosity, Shen Xianyu decides to stay and devour the misfortune surrounding him. As they spend time together, she discovers that the young general, rumored to be unruly and bloodthirsty, is actually a man of unwavering convictions who always keeps his promises. They gradually fall in love, and as Gu Chengyuan's health improves, the Crown Prince, the mastermind behind everything, finally makes his move. At the Hongmen Banquet, Shen Xianyu risks her life to help him, and her true identity finally comes to light: she is the long-lost legitimate daughter of the Duke's household.