Su Yunwan is born with a rare destiny destined to bring prosperity and good fortune to her husband, making her the ideal future empress. On her wedding day, however, she is publicly humiliated by the Ninth Prince, Shen Chengyu, who forces her to kneel and serve tea to his pregnant personal maid, Xi Yao. Enraged, she tears up their marriage contract and declares that she will marry anyone who dares to ask for her hand right there and then. The Crown Prince, Shen Qiankun, who suffers from a chronic leg condition, steps forward and boldly claims her as his bride, making her the Crown Princess. Gifted in medicine, Su Yunwan gradually cures the Crown Prince's long-standing ailment. When the Ninth Prince grows resentful, frames them, and plots a rebellion, the couple joins forces to crush his schemes and restore order to the imperial court. In the end, the Crown Prince ascends the throne, and Su Yunwan becomes the empress, mother of the empire. It turns out that their so-called heavenly destiny is a love match in which both hearts choose each other.