To save a pair of siblings she had taken in, Xin Yuan went alone into the mountains to look for medicine, stumbled into the Peach Blossom Land and stayed ten days. When she came out, ten years had passed outside. The frail Zheng Ruyi of old had become the capital's greatest imperial merchant, and the stubborn boy Zheng Bo'an was now the dreaded Commander of the Embroidered Uniform Guard. Xin Yuan meant to cling to these two powerful patrons, only to find the siblings at each other's throats, and she herself had forgotten things she never should have forgotten.