Shen Mingyuan can see the red threads of fate connecting people to their partners. A deep vermilion thread represents profound love, a faded one signifies a change of heart, and a broken thread means their bond has come to an end. She once believed that the deep vermilion thread around her husband Xiao Heng's wrist proved their unwavering love after seven years of marriage. But on the night of the Mid-Autumn Festival, she witnesses Xiao Heng accompanying Qin Lan, a widow, and her child. His red thread has quietly faded. Faced with Xiao Heng's favoritism and repeated hurt, Mingyuan refuses to endure it any longer. She takes A Jin to Lingnan, where she restores the estates and cloth shop left behind by her mother. With her Yunshui Xia silk, she makes a name for herself at the Autumn Weaving Fair. Xiao Heng eventually realizes his mistakes and follows her to Lingnan, desperately regretting his actions and trying to win her back, but his remorse can never make up for what he has done. Pei Changyuan, her childhood friend, has always respected and protected Mingyuan and her child.