The Shen family, an imperial weaving merchant in the south of the Yangtze River, has a pair of twins. The elder sister, Shen Zhiwei, is bright and smart, and is the default candidate for the crown princess; the younger sister, Shen Zhiyi, is quiet and good at weaving, and hides in the embroidery building all year round. A sudden marriage decree specifies that the daughter of the Shen family will marry Shen Yungui, the mysterious marquis who has returned from the north. On the eve of the wedding, her sister disappeared mysteriously. In order to save her family, Shen Zhiyi was forced to put on a wedding dress, impersonate her sister and enter the unfathomable Hou Mansion. She thought it was just a temporary measure, but she didn't know that this substitution marriage had created an inescapable web of secrets from the beginning that intertwined her with that man, and even with the secrets of the entire dynasty.
