Among a batch of mysterious red cultural relics, there is a diary that needs to be restored. Young cultural relic restorers Liu Yuan (played by Li Muchen) and Wang Ze (played by Ge Qiugu) took over this task. In the process of restoring the diary, they uncovered a secret that had been sealed for decades, and also brought out the undercurrents between "Miss Zhao" (played by Li Muchen) and "Fox" (played by Ge Qiugu).