Chen Miaomiao, a Shanghai teenage girl, is dumfounded when one night she finds out that her loving mother is not a human, but a "blue people" who hails from another world. Adding insult to injury, the girl suddenly faces breakup of her family as her father begins to press for a divorce with her mother. With help from her best friend, a girl of a single parent, Chen tries all means to save the family from disintegration. However, despite the girl's desperate endeavor and her mother's reluctance to part with the human world, time comes when the mother has to go back to her home world, leaving behind a memory of a childhood with a fairy mother for the young heroine.