Yobi (voiced by Sun Yizhen) is a thousand-year-old fox. Although she is 100 years old, she is actually equivalent to a 10-year-old human child. She is in the blooming season and lives with six aliens who forced her to land on Earth. According to the rules, if the thousand-year-old fox wants to become a human being, it must get the human soul, which also causes the thousand-year-old fox to kill human beings. In turn, humans continue to hunt and kill the thousand-year-old fox in self-defense, and she is the only one left in the Youbi generation. In her eyes, human beings are synonymous with stupidity and have no desire to be human. Until one day, she met a boy named Kun Yi (voiced by Kong Jiongzhen) and began to like him. The boy lived in the human world, and Yobi went to the place where he lived in order to get close to her dressed up as a human. So she began to associate with human beings with curiosity, so the new life opened a new world full of adventures to her.