Lao Wang is an old man living alone in the countryside. After being dismissed and sick in succession, he built a coffin for himself and lay in it. After hearing the news, the son thought that his father was making trouble for no reason, felt helpless and humiliating, and persuaded him to have a conflict with his father. When the conflict between father and son is the most intense, the sudden death of the neighbor makes the father and son gradually understand each other and ease the relationship.