Barbie and her sisters go to an island paradise for a dance competition, but they must work together as a team to find their pets after their furry friends go missing at a horse festival.

Barbie and her sisters, Skipper, Stacie, and Chelsea, visit their Aunt Marlene at a horse ranch in the Swiss Alps. While there, they discover a mysterious wild horse that leads them on a magical adventure filled with friendship and sisterhood.

Barbie and her sisters set out on an adventure to find a lost treasure in order to save their grandmother's home. Along the way, they encounter clues, riddles, and secret passageways that lead them to a hidden treasure, with the help of their adorable puppies.