During the Jiayou period of the Song Dynasty, Murong Zhaoxue, the eldest daughter of a weaving family in Suzhou, accidentally triggered the bronze abacus left by her ancestors during a family ancestor worship. From then on, a parallel time and space governed by the laws of modern finance appeared in her vision. She must find the same key figures in these two worlds - only one side is a business tycoon six hundred years later, and the other side is a chess player in the Song Dynasty court - and her fiancé Shen Yanci, who has great military achievements.