Jimmy was raised on the moon by her aunts and her brothers Teruto and Seth have been looking out for her for years. When Jimmy returned to Earth he forgot the entire history and hes only slowly been convinced that hes a mermaid. Jimmy will grow up to be a beautiful woman even though she looks like a boy. Her mother was the fabled Little Mermaid and theres a prophecy that her daughter Benjamin will save the world or end it forever. The mermaids think that her saves the planet by falling in love with a merman but Jimmy really likes her human friend Art.