After retiring, Liu Jianguo gives his son's family 3,000 yuan every month to help with their expenses. He also takes responsibility for grocery shopping, cooking, and picking up and dropping off his grandson. However, his daughter-in-law thinks the household expenses are too high and demands that he contribute another 500 yuan. During a meal, when Liu Jianguo tries to take a piece of pork ribs that he bought himself, his daughter-in-law stops him, while his son, Liu Zhiqiang, tells him to let the child have it. A single piece of pork rib sparks a family argument and makes Liu Jianguo reconsider everything he has been giving to his family.