The OSS has discovered that an evil family plans to take over the world, using a new hit reality show. With the world to save and a competition to win, the Spy Kids take on this evil family, both on the screen and off.

Carmen and Juni are assigned guard duty for a famous pop star The pop star's talents are the result of a powerful gem that has now fallen into the hands of an evil villainess. The Spy Kids must save the star!

Carmen Cortez likes the help of British Spy Kid Maya Sinclair but Juni Cortez is suspicious of her.

Juni and Carmen investigate when their babysitters grow whiskers and tentacles. Could they be secret animal agents?

Carmen and Juni are spending the summer at an OSS sleep-away camp. The camp director is a retired spy-turned-environmentalist named Oscar Zohn. But it turns out that O. Zohn thinks environmentalism means using nature for his own devices. He plans on using the unknowing help of the Spy Kid campers. Only Carmen and Juni are in the know…which means only they can save the world!

When their parents go on a spy mission to Brazil, Carmen and Juni are assigned two babysitters from the OSS. But when one sprouts tentacles and the other whiskers, they realize that these are spies on the prowl--and Carmen and Juni are on their own to solve the case.