Joe and Sam put their spy skills to the test against a new villain, in a new mission and in...tutus?! The only way to find out who is scheming to steal the World Cup memorabilia exhibition at the local leisure centre is to sign up for ballet lessons there. Joe and Sam land the lead roles in the end-of-term show—but Sam's playing the male lead, and Joe's the prima donna! Can Joe hold it together (and Sam stop laughing) for long enough to find the clues and figure out who's really behind the next Great Robbery?