Xu Yunduan, the copywriter of creative advertisements in 4A Advertising Company, was running on a treadmill in an eerie fitness center, and she ran all the way back to the prosperous Tang Dynasty, transforming into Ji Lanshang, a rich young lady from Chang'an. However, she unexpectedly encountered a family downfall and was on the verge of bankruptcy. She was forced to face a commercial marriage alliance and take on the responsibility of saving her family business. Who is she supposed to marry? How can she do business in the prosperous Tang Dynasty with the mentality of a modern person? Who will she meet, and what events will occur? And where did the real Ji Lanshang go?...