Babe, fresh from his victory in the sheepherding contest, returns to Farmer Hoggett's farm, but after Farmer Hoggett is injured and unable to work, Babe has to go to the big city to save the farm.

"Police Academy" clone, about some nerds who inherit an academy for morticians, which is run by a corrupt closet necropheliac. Of course, the most incompetent students possible are accepted, so that the academy will fail, and all sorts of wacky hijinks ensue.

In the future, mental institutions are located on far-away planets. One such planet is the apex for an invasion of Earth by rodent-like aliens. It is up to a band of intrepid mental patients to thwart their evil schemes.