In the dog days, in order to raise enough medical expenses for the old mother who was admitted to the county hospital in case of a stroke, Lao Qi begged for help. Although he worked hard to raise money, the money he borrowed was still far from enough to cure his mother. At this time, Yang Kangquan, a nephew who usually deals in population business, found Lao Qi and introduced him to a job of sending a boy to a brick kiln 600 kilometers away. As long as it was delivered safely, there would be a huge reward. In order to save all the medical expenses for his mother as soon as possible, Lao Qi agreed. That night, in Yang Kangquan's room, Lao Qi saw the mute for the first time.