Elder sister-in-law Chen Yali hosted mother-in-law's birthday banquet to save face, plotting to stealthily swipe younger sister-in-law Su Nian's registered company store-value card, which was blocked in advance by Su Nian setting a password. Reluctant Chen Yali then teamed up with younger brother Chen Jianjun from the purchasing department, snatching the client gift box project managed by Su Nian, violating rules by splitting orders, using old templates for wrong-version production, and even defying orders to ship, ultimately triggering a major client accident. While shifting blame to each other, past schemes were exposed, and both were held accountable and disciplined by the company. Su Nian stepped in during the crisis to remedy and win back the client, promoted by ability to Key Account Department Manager, and also drew a clear boundary with the muddle-headed husband's family.