After venting about a 1970s-background novel with her best friend, Ning Jia accidentally time-traveled together into the book's world, becoming sisters-in-law living in the same courtyard who did not get along well. Her best friend was in a difficult situation, enduring long-term oppression and grievance; Ning Jia constantly missed her husband, yet spent years living alone day after day. Their lives were poor and financially strapped, and their daily routines were constantly harassed by others. Should the best friend separate from her husband and seek another way out?