表面上， 玛丽莎·柯兹·威尔逊（杰西卡·阿尔芭 饰）有着叫人艳羡的生活…嫁给了著名的特务追踪电视新闻记者，刚生下了一个可爱的小宝宝，还有一对聪明伶俐的继子继女，但其实玛丽莎是个退休的特务。 当疯狂的时间控制者（杰里米·皮文 饰）发出警告说要偷走时间并征服全世界的时候，玛丽莎的生活发生了翻天覆地的变化。继女瑞贝卡和继子塞西也被卷入了战争，而他们发现自己无聊透顶的继母居然是曾经最棒的特务。带着令人眼界大开的新奇装备，非常小特务们非常有可能依靠智慧再一次拯救世界，并且让全家人团聚。
On the surface, Marissa Cortez Wilson (Jessica Alba) has it all...married to a famous spy hunting television reporter, a new baby and intelligent twin step kids. But in reality, trying to mother Rebecca (Rowan Blanchard) and Cecil (Mason Cook), who clearly dont want her around, is her toughest challenge yet. Also, her husband, Wilbur (Joel McHale), wouldnt know a spy if he lived with one, which is exactly the case - Marissa's a retired secret agent. Marissa's world is turned upside down when the maniacal Timekeeper (Jeremy Piven) threatens to take over the planet and she's called back into action by the head of OSS, home of the greatest spies and where the now-defunct Spy Kids division was created. With Armageddon quickly approaching, Rebecca and Cecil are thrust into action when they learn their boring stepmom was once a top agent... now the worlds most competitive ten year olds are forced to put their bickering aside and rely on their wits. With a little help from a couple of very familiar Spy Kids, Carmen (Alexa Vega) and Juni Cortez (Daryl Sabara), and some mind-blowing gadgets, they just may be able to save the world and possibly bring their family together while they're at it.
