Lu Cheng'an, the owner of an appliance repair shop, has long endured his wife's family's endless demands. His younger brother-in-law, Shen Hao, borrows a car to keep up appearances and gets into trouble, yet the Shen family blames Lu Cheng'an for being petty. When they pressure him to provide 300,000 yuan to buy Shen Hao a marital home, Lu Cheng'an unexpectedly agrees to pay the full price. However, he takes everyone to a dilapidated countryside outbuilding worth just 3,000 yuan, exposing Shen Hao's lies and vanity. Eventually, Shen Hao comes to his senses, works to repay his debts, and learns to stand on his own feet. Both families establish clear boundaries in their relationships and return to a peaceful, warm life.