Zhuang Zhou, a modern-day businessman, travels through time after an unexpected accident to the prosperous Tang Dynasty, where envoys from countless nations gather at court. By a twist of fate, he gains the ability to travel freely between the modern world and the Tang Dynasty. With this one-of-a-kind passage at his disposal, Zhuang Zhou decides to make his fortune through trade. He brings glassware, fine spices, and innovative modern products from the present day, while purchasing porcelain, tea, antiques, and precious treasures in the Tang Dynasty to sell back in the modern world. He opens a general merchandise shop in Chang'an and steadily expands his business, quietly building a commercial empire spanning two worlds. But wealth attracts greed, and the mysterious origins of his goods soon draw the covetous attention of court officials, powerful aristocratic families, and underworld factions.