A mysterious "Star Tracks" unexpectedly swapped the souls of two time and space - Lin Yan, a modern ancient book restorer, woke up and transformed into Shen Zhinian, a collector of ancient books in the Republic of China. And Shen Zhinian, a collector of ancient books in the Republic of China, was caught off guard and fell into the neon-lit modern world... When will the halo of mysterious ancient books reappear? Can they figure out each other's lives in disguise and find the key to regaining their souls?
