Fancy Nancy and her best friend, Bree, couldn't be more excited about their upcoming dance show. After all, it's all about mermaids - and who knows how to be a fancy, glamorous mermaid better than Fancy Nancy herself? But when another ballerina wins the coveted role of one of the mermaids, Nancy is stuck playing a dreary, dull tree. Can Nancy bring fancy flair to her role, even though it isn't the one she wanted?