After Xu Jingru and Pan Yuchen get married, her brother-in-law's family lives in their marital home for free for three years, eating and staying there without contributing anything. During those three years, the brother-in-law's household grows from three people to four, making their 90-square-meter apartment increasingly cramped. Meanwhile, his family becomes more and more demanding, constantly pushing their boundaries. Eventually, after an explosive confrontation, the conflict reaches a breaking point. Xu Jingru finally comes to her senses. She realizes that she should not keep making concessions just to preserve the family or maintain the illusion of a complete home. Instead, she must take action and show everyone that women in unhealthy marriages must know when to stand up for themselves. She sells the apartment and launches her counterattack, ensuring that the wicked are punished and the good can live happily.