Description：The story takes place in a magical world called Magic Fairy Castle. The Black Magic Fairy Xiaoyue (played by Zhou Jiao) secretly practices black magic and wants to steal the Magic Fairy Color Stone. The guardian magic fairy Xiaolan (played by Liao Jingxuan) came to the human world in order to track down the whereabouts of the magic fairy colored stone. She hid in a music box and met the kind sisters Ling Meiqi (played by Sun Zhen) and Ling Meixue (played by Huang Anyi). Xiaolan moved into the sisters' home and became their nanny. The three of them spent a period of happiness and joy together and forged a deep friendship with each other. The Fairy Queen (played by Wang Hui) specially allowed Xiaolan to teach the two sisters magic. Meiqi and Meixue became little magic fairies. At the same time, Xiaoyue also met a girl named Yan Lili (played by Liu Meihan) in the human world and turned her into a little black magic fairy. In the human world, a battle between justice and evil is about to begin.