In the spring of the 18th year of the Republic of China, Wen's Trading Company in Shanghai was facing bankruptcy due to a broken capital chain. The Sheng family proposed a marriage as a savior on the condition that Wen Daixi marry Sheng Jingyu and give up the family shares. In order to save her father and hundreds of employees, Wen Daixi reluctantly signed the contract. The agreement stipulated that they would automatically divorce after one year, during which they would maintain their private lives. On the night of the wedding, the two separated rooms indifferently and laughed at each other's acting skills. Sheng Jingyu appeared to be idle. , Is actually a writer for progressive newspapers, responsible for delivering information; Wen Daixi found a copper key engraved with the words "Prince Gong's Mansion" while sorting out her late mother's belongings; she began to secretly investigate her own life experience; in the library, Sheng Jingyu found that Wen Daixi was reading old newspapers about the fire in Prince Gong's Mansion; the two confronted each other in the cafe and revealed part of the truth; Sheng Jingyu admitted that he was looking for a batch of missing cultural relics to use. In exchange for organizational funds; Wen Daixi revealed that her mother left half a map before her death; the two decided to maintain their marriage on the surface and join forces to hunt for treasures in private; at this time, Sheng Jingheng and Japanese spy Yamamoto had targeted them and arranged an undercover agent in the Wen family factory; a fire broke out in the factory, Sheng Jingyu took the risk to rescue the trapped workers and won Wen Daixi's trust; Sheng Jingheng forged evidence and falsely accused Sheng Jingyu of smuggling arms; Wen Daixi obtained the money through her father's old department Sheng Jingheng embezzled the accounts and rebelled against the general; but Sheng Jingheng jumped over the wall and kidnapped Wen Daixi; Sheng Jingyu went to the meeting alone and replaced someone with a treasure map; when the vote was broken, the inspector from the patrol room rushed to the rescue; the housekeeper Liu Bo revealed the secret before his death: Wen Daixi was the surviving daughter of Tang Jiyao, the general who protected the treasure. The general burned himself to protect cultural relics and entrusted his daughter to the Wen family; a traitor appeared in Sheng Jingyu's organization, and his identity was exposed;
