Four high-tech industrial spies, Beaupre, Alice, Jernigan and Unger, steal a top-secret microchip, and, to fool customs, hide it in a remote-control toy car. Through a baggage mix-up at the airport, grumpy old Mrs.Hess gets the toy and gives it to her neighbor, 8-year-old Alex. Spies want to get the toy back before their clients get angry and decide to burglarize every house at Alex's street to find the chip. But Alex is prepared for their visit...