In a family, there is an old father and his three sons. As the father gets older, his three sons drive him out into the wilderness because they do not want to take care of him. Later, a businessman comes up with an idea to help the old man. The merchant gives the old man a box and tells him to pretend he has a treasure, so his sons will take care of you. The old father does as the merchant tells him, so that all the sons fight to take care of the father. After the father's death, all the sons open the treasure box and discover it is only filled with stones.