Courier Lao Cao (Cao Jianguo) and his third-year junior high school son Cao Ze have been estranged for many years. After an argument and an electric shock, the two accidentally switched bodies. The two were forced to live in each other's place. Lao Cao went to school and had a puppy love affair, only to learn that his son had secretly set him up with a woman who lived alone. The son delivered express delivery for his father and even had hemorrhoids removed on his own initiative. This bizarre exchange allowed the father and son to understand each other's concern hidden in silence, and the belated understanding finally came to their hearts.
