During the Shangyuan Lantern Festival, Jiang Wanning catches her fiancé, Xie Lanzhou, marking the chest of his favored concubine, Yudi, a slender beauty from Yangzhou, with the same cinnabar mole he once gave her. The two publicly humiliate Jiang Wanning in every possible way. Her heart turns cold, and she immediately accepts the Emperor's arranged marriage, deciding to wed Duan Zhengming, the Prince of Zhenbei, notorious for his ruthless reputation on the battlefield. Enraged and humiliated, Xie Lanzhou comes to her door to force her to comply, but Jiang Wanning resolutely tears up their engagement contract. At a flower-viewing banquet, Duan Zhengming publicly presents the imperial edict confirming their marriage, fiercely protecting his future wife, punishing Yudi, and bringing Xie Lanzhou down a peg. Xie Lanzhou loses his official position and falls into disgrace, while Yudi meets a tragic end. It turns out that Jiang Wanning saved Duan Zhengming years ago, and he has long been in love with her. The two marry and remain devoted to one another, finally finding a lifetime of peace and deep affection.