Dai Xi is an all-powerful robot, but she develops a sense of autonomy as she gets along with her owner. On the way her owner takes her to the scrap center, a car accident happens. She travels to an era called Dazhou. She starts with three children, and her family is extremely poor. She even has no rice to cook. Then she starts to get rich by making bone toothbrushes, selling pigs, and growing watermelons...