Marietta is a mermaid born on a majestic day under the sea to loving parents, however they soon realize their baby mermaid looks a little different than all others. Marietta's pale green tail does not have any scales. Even though she is unique, Marietta's family see her as beautiful. When it becomes time to start school Marietta is nervous about her scale-less tail, but she soon learns that beauty comes from the inside and that is the one thing that makes a beautiful and happy mermaid.