Sienna is unhappy. Her mum has disappeared and Sienna feels alone in Shanghai.
Rufus an invisible dog is her only friend. When their mean housekeeper
starts acting suspiciously, she decides to investigate. She follows a trail of
clues that leads her to a mysterious moon-lit temple. Is her mothers
disappearance linked to a priceless statue of the moon princess? And can Sienna
discover the dangerous truth?