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When a group of inept criminals attempt to get a stolen, top-secret computer chip through airport security, it ends up in a toy car in the luggage of the elderly Mrs. Hess (Marian Seldes). Unable to retrieve the chip, the crooks follow Hess to her neighbourhood. After she gives the toy to young Alex Pruitt (Alex D. Linz), who is home from school, he becomes the target of the criminals. However, the precocious kid is ready to fight them off at all costs.