Zhusheng's father suddenly died under the watchful eyes of the old dog. The dog witnessed the whole process of Luo's arrangement of his father's funeral. When Luo is embalming his father's body, outside in the forest comes a gunshot. As the forest ranger, Luo has to put down his father's body and patrol the forest. During the night, Luo sits alone on top of the hill, and he can't help crying bitterly. On their way home, Luo and the old dog rescue a lamb that has almost been eaten by a wolf. Luo takes the injured lamb home, give it herbal medicine, and the lamb gradually recovers. Luo continues to handle his father's funeral affairs in an orderly way. He digs the grave, prepares a hearth, makes dough figures, and the coffin. He follows the ancient rituals handed down from generation to generation in every process. At this moment, the dog, his companion, smells danger outside the door. The wolf is approaching.