Su Nian, the heroine of modern society, dreamed of a woman in black from the Republic of China shouting "Quickly!" After inheriting the mysterious bookstore, she discovered that every old book was connected to fragments of memories from her past life. When she pieced together the tragic past of a talented woman in the Republic of China and her underground party lover, she was shocked to realize that she was both a bystander and a key figure who personally rewrote history.