In the troubled times of the Republic era, fallen noble daughter Lin Wanqiu works as a odd-job worker at a department store, where she kindly saves an undercover Old Master Lu. To escape the desperate situation of her stepmother selling her off to pay debts, Wanqiu takes a lost Lu family jade thumb ring and intercepts Jiangdong Young Marshal Lu Zhengyun's motorcade on the street to propose marriage. The two sign a contract marriage certificate, fighting side by side in troubled-era business wars against black-hearted relatives and wealthy green-tea villains, finally becoming a devoted couple.