Who would have thought that the athletic and hard-working gymnasts, Barbie, Teresa, and Renee could be thrill-seeking undercover agents? Before long, the girls will find themselves in a fast-paced adventure, when a secret intelligence agency wants to use the inseparable team's special skills to stop a series of precious gem robberies, and to unearth the elusive thief. Now, with a new set of high-tech gadgets and a pair of unexpected companions, Barbie and her sisters-in-arms must work fast in this difficult cat-and-mouse game to prove their worth. Who can stop the mighty Spy Squad?