In order to protect the ancestral ancient paintings, cultural relic restorer Huang Zhiqing was forced to sign a contract marriage with Zhao Xizhou, the president of the auction house. Behind this profit-based transaction, there is a deeper secret hidden - in the secret room of Zhao Xizhou's study, the national treasure lost by Grandpa Huang Zhiqing during the Anti-Japanese War is actually locked.
As a rising star in the field of cultural relic restoration, Huang Zhiqing exposes fakes in public at an auction, but encounters difficulties from those with evil intentions. At the critical moment, Zhao Xizhou strongly protected his wife. An unexpected kiss caused an uproar in public opinion and made the relationship between the two more delicate.
As the investigation deepens, secret codes, antique black markets, and transnational smuggling syndicates have emerged one after another. In the process of solving the mystery, they gradually uncovered the tragic past of two families who had protected the national treasure for three generations. The masked relationship in the contract marriage quietly breeds sincere feelings in the thrilling adventure. When the national treasure reappears, how will they continue this relationship that started with interests and was loyal to the sincerity?
