A sweet-natured Temp Agency operator and amateur Presidential look-alike is recruited by the Secret Service to become a temporary stand-in for the President of the United States.

A wrongfully convicted boy is sent to a brutal desert detention camp where he must dig holes in order to build character. What he doesn't know is that he is digging holes in order to search for a lost treasure hidden somewhere in the camp.

After losing their academic posts at a prestigious university, a team of parapsychologists goes into business as proton-pack-toting "ghostbusters" who exterminate ghouls, hobgoblins and supernatural pests of all stripes. An ad campaign pays off when a knockout cellist hires the squad to purge her swanky digs of demons that appear to be living in her refrigerator.

Two hundred years after Lt. Ripley died, a group of scientists clone her, hoping to breed the ultimate weapon. But the new Ripley is full of surprises … as are the new aliens. Ripley must team with a band of smugglers to keep the creatures from reaching Earth.