Somehow, the world's largest diamond, the Star of Africa, was stolen. The police are baffled and it's up to Zack and Ivy to figure this mystery out. They soon discover that one of Carmen's henchmen tried to double-cross her and keep the diamond for himself. With a little trickery of their own, the detectives recover the diamond.

It is reported that Carmen dies in a plane crash. The grief-stricken Chief is unable to help Zack and Ivy solve a series of clues that Carmen left behind to a final caper. The henchman who solves the most of them will be the new leader of V.I.L.E. Zack and Ivy manage to stop all of the thefts. They then travel to the site of Carmen's reported death to pay their last respects. Suddenly, a little bird delivers a message to "look up". When they do, they see Carmen was alive all that time. She had planned to fake her death to see who was worthy enough to take her place - and it turns out Zack and Ivy are the only ones who can!