On a weekend morning, Xu Ning receives a strange call from sister-in-law Lin Yan, accusing her of borrowing money and refusing to repay it, as well as cursing her critically ill mother-in-law. Through this, she discovers that six years of hostility between her and her sister-in-law stems from fabricated accounts, forged IOUs, and lies meticulously crafted by her brother, Xu Mingyuan. Xu Ning and Lin Yan go from mutual suspicion to teaming up to audit the accounts, uncovering the truth about Xu Mingyuan intercepting gifts, swindling the bride price, borrowing money under false pretenses, and even embezzling surgery funds for investments. In the end, Lin Yan files for divorce, Xu Ning and the relatives recover their claims according to the law, and the two women, estranged and manipulated for years, rebuild a direct and clear-headed relationship.