Over the Moon follows the life of an adventurous and intelligent 12-year-old Chinese girl named Fei Fei. Years after the passing of her mother, Fei Fei desperately tries to find ways to keep her memory alive after finding out that her father is planning to remarry. She builds a rocket ship to go to the moon, hoping that she will meet the moon goddess Chang’e. When she was alive, Fei Fei’s mother told her tales of Chang’e and her undying love for her partner. Fei Fei believes that finding Chang’e will prove to her father that he doesn’t need to remarry and he should continue loving her mother.