Carmen (Alexa Vega) and Juni (Daryl Sabara) believe that their parents lead a pretty dull life and are quite boring. Little do the kids know that Gregorio (Antonio Banderas) and Ingrid Cortez (Carla Gugino) used to be top secret agents. They had given up their exciting careers to raise their kids. But an emergency makes them get out of retirement. What they did not count on was Carmen and Juni joining the family business of spying.