Barbie stars alongside her three sisters, Skipper, Stacy, and Chelsea. Together with their adorable puppies, they get involved in mysterious adventures, returning to their hometown. While exploring their grandma's attic, among other keepsakes, they find an old map that they believe will lead them to a long-hidden treasure somewhere in the city. The four girls set out on an exciting treasure hunt and discover that the most priceless treasure they have already obtained.