Lin Xia, a restorer of cultural relics in the Forbidden City, accidentally triggered the Qianlong Dynasty to travel through time and space, and met the iron hat Wang Yiming who was ordered to investigate the theft of the national treasure. When the lacquered secret letter from the Western auction house collides with the sandalwood of the Yangxin Palace, and when the X-ray detection technology of cultural relics meets the gilding craftsmanship of the Ministry of Internal Affairs, the two people went from mutual suspicion to joining hands to fight against the enemy in the process of tracking down the "Leakage Case of the Twelve Zodiac Animal Heads". The underground black market auction in Liulichang, the cracking of the Tongque Tower in Old Summer Palace, and the use of mounting techniques to forge national treasures and replace them with genuine ones... They used modern cultural relic protection concepts to rewrite the historical trajectory, but at the critical moment to prevent the burning of Old Summer Palace, they discovered that there was more than one person who had traveled through time. When the gunshot wound on Yi Ming's chest echoed across time and space with the bullet casing in Lin Xia's hand, and when the cultural relic files from 2035 appeared in the secret room of Yangxin Palace, the battle for protection suddenly revealed the shocking secret of parallel time and space.
