Barbie loves to help others. But when a mermaid's in distress, that's an adventure on a whole new level: underwater!

With new friends in a new kingdom, Barbie learns what it means to be herself when she trades places with a royal lookalike in this musical adventure.

When Barbie's sister Chelsea thinks her birthday has been skipped, she hunts for a magic gem on a jungle island that will grant her wish to get it back.