خلاصه داستان : یک مارشال احمق آمریکایی (لزلی نیلسن) سعی می کند رئیس جمهور را از توطئه ای که شامل بیگانگان و شبیه سازی می شود نجات دهد...

When odd reports are received through official channels stating that the President of the United States is being held captive on a secret international moon base called Vegan and that he has been replaced on Earth by a clone, the US Marshall Service immediately sends their 'best' man, Dix, on the mission.