Parents secretly sold their daughter's three-generation-inherited courtyard house, using all over 8 million yuan in housing funds to buy a wedding house in full for their son, only to turn around and come to their daughter penniless, demanding that she take full responsibility for their elderly care. At first, the husband tried to persuade his wife with filial piety to compromise and accept them, but the female protagonist kept a clear head to draw the property bottom line, legally claiming equal rights and duties. After experiencing the biased scheming firsthand, the husband came to his senses; the couple joined hands to protect their small family and reasonably resolved this maintenance dispute.