Gifted Girls. Daring Dames. Marvelous Mysteries. The Secret Spy Society is back with a new case to solve! After officially naming themselves the Petite Private Eyes, Peggy, Rita, and Dot are ready to take on a new assignment from the Lady Spies. The Fashion Twins, two local designers, have been robbed! When the girls go undercover to investigate, they find themselves joining a curious scout troop run by a mysterious scout leader. With the help of the Lady Spies and a feisty pet cheetah, will the girls crack the case and make some new friends?