Shen Qing has taken care of her younger sister-in-law, Liang Xin, for thirteen years. She thought that once Liang Xin got married, she could finally enjoy some peace and quiet. But to her surprise, Liang Xin wants to move back in with her mother-in-law. Faced with her husband's favoritism and one unreasonable demand after another from the family, Shen Qing decides to stop giving in. From sorting through years of household bills to reconsidering her marriage, she gradually realizes that being considerate should never mean sacrificing her own happiness. With the help of a lawyer, she stands up for her rights, walks away from an unequal relationship, and transforms the little bedroom she waited thirteen years to reclaim into her own study, finally regaining control of her life.