The mystery heats up as Jimmy learns his secret destiny! The mer-people know that Earth's only hope is for the daughter of the original "Little Mermaid" to fall in love with Shona and bear his eggs. What they don't all believe is that Jimmy, a 12-year-old amnesiac, is that girl. After all, Shona was the only witness to Jimmy's startling transformation into the girl of his dreams, and he's decided to let the boy make his own choices. But not everyone is willing to take that chance…because if Jimmy picks his human best friend Art, the world is doomed!