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) is her toughest challenge yet. Marissa's a retired secret agent and her world is turned upside down when the maniacal Timekeeper (Jeremy Piven) threatens to take over the planet and she's called back into action. With Armageddon quickly approaching, Rebecca and Cecil are thrust into action when they learn their boring stepmom was once a top agent. With a little help from a couple of very familiar Spy Kids friends, Carmen (Alexa Vega), Juni Cortez (Daryl Sabara), and Gregorio Cortez (Antonio Banderas) 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.