Crystal, a young mermaid with a cobalt blue tail, discovers the secret of sea glass! Crystal loves to find treasures and take them home to Mimi, her wise grand mer-mother. When Crystal finds a piece of frosty green sea glass, Mimi makes Crystal promise to stay away from human beings, but on a stormy day Crystal rescues a boy in trouble. As Crystal comforts the human boy named Steven, she falls in love for the very first time. Will Steven even remember...