Su Tang, a modern screenwriter, accidentally traveled into the world of Nanzhao because of unauthorized changes to the emotional line of a costume drama, and saved the Inkstone King Meng Yan who was destined to die early. In order to survive, she relies on her wit and modern thinking to deal with the struggle for royal power, palace intrigues, crisis in Liuyun Village and border wars, and gradually changes the fate of Meng Yan, Meng Yu and others. But when the old script completely got out of control, and sacrifices and partings came one after another, Su Tang could only cross the city gate and return to modern times, leaving only a strand of black hair to witness the true connection between the two worlds.
