Ally and her mates are most chuffed when a bunch of delicieuse French boys turn up at Palace Gates school because of a French exchange. (Well, OK, they're not all delicieuse, but still...) Only Jen seems a bit distracted, but Ally doesn't have time to get to the bottom of it before it's too late - Jen's pulled a vanishing act, and somehow Ally doesn't think she's eloped to Calais with a French boy...