When Emily makes a wish on a magic stone, she sees what the future holds – and it's a disaster! She tries another wish, but each journey through time takes Emily to a future where things turn out unpleasantly, either for the people of Brightport or for the merfolk of Shiprock. Plastic pollutes the ocean, trash floods the landfills… and the two towns are no longer getting along. Is there something Emily can do to save everyone's future, including her own? Emily's ninth adventure, even more incredible and unique…