When bizarre reports come in that the President of the United States is being held hostage on a secret international moon base and has been replaced on Earth with a clone, the US Marshall Service sends Marshall Richard "Dick" Dix (Leslie Nielsen) to investigate. Dix departs for the moon on a space shuttle. When he arrives on the moon, he soon gets arrested by Pratt, the head of the moon base. However, Dix succeds to escape and smuggles the President back to Earth. What he doesn't know is that the President he is transporting is, in fact, the clone, part of a clever ploy designed by Pratt to take advantage of Dix's low IQ. When he realizes the mistake he has made, Dix desperately sets out to undo the damage he has caused.