After getting married, Lin Xi discovers that her sister-in-law, Zhang Lan, has been packing up the New Year's Eve dishes to take home to her own parents every year, constantly taking advantage of her husband's family and even scheming to claim her parents-in-law's retirement property. Rather than endlessly giving in, Lin Xi stands her ground with reason and principles, setting clear boundaries and cleverly resolving one conflict after another. She protects her own rights and maintains order within the family while helping her confused relatives see things clearly. Eventually, Zhang Lan comes to her senses and changes her ways. Each family member finds their rightful place, and the family finally puts an end to its internal strife and begins a new life filled with mutual respect, warmth, and harmony.