A prison keeper named Xiaoxinyu tells us that he is a "ruthless prison keeper" and that he often encounters strange visitors. One of these visitors is an old man who visits his son in prison. The old man brings food and asks his son to visit him every day. When the old man tells him that he likes meat buns, the young man says that it reminds him of his father. He tells his brother that he misses his father and wants to see him. He asks his brother to go and visit him. The young man is sorry that his father has been so kind to him, but he says that he has not done anything for him.