Wen Xiulan and her husband Cui Chengyi have stayed together for eighteen years, actively taking a concubine to continue the family business, yet insisting on respecting everyone's choices first. After Xu Zhaowan enters the mansion, a series of conflicts arises surrounding the child's belonging and family rules. Facing pressure from clansmen, Wen Xiulan goes from initially pursuing family stability to learning to guard everyone's feelings. In the end, the family finds a way to get along through understanding and communication, making the deep courtyard no longer have only rules, but also warmth.