Zhang Cuihua, the mother-in-law of the Li family in the Northeast, has always been particular and strict with rules, always feeling that the younger daughter-in-law, Liu Damei, has a sweet mouth and is filial, while being hypercritical of the eldest daughter-in-law, Wang Xiuxiu. After enduring it for five years, Wang Xiuxiu goes with the flow and sends her parents-in-law to live with her second son for their elderly care. From her initial attentive and feigned filial piety, Liu Damei gradually reveals her true colors. Suffering through all kinds of friction while climbing stairs and getting along in daily life, the parents-in-law finally miss the goodness of the eldest daughter-in-law and come to understand the true meaning of family affection. In the end, the elderly couple returns to their hometown to live alone, with both families supporting them monthly. Maintaining distance turns out to make the family more harmonious, articulating the ordinary family wisdom of "distance breeds beauty" in getting along.