The accidental mix-up of four identical plaid overnight bags leads to a series of increasingly wild and wacky situations.

Aspiring filmmakers Mel Funn, Marty Eggs and Dom Bell go to a financially troubled studio with an idea for a silent movie. In an effort to make the movie more marketable, they attempt to recruit a number of big name stars to appear, while the studio’s creditors attempt to thwart them. The film contains only one word of dialogue, spoken by an unlikely source.

A young neurosurgeon inherits the castle of his grandfather, the famous Dr. Victor von Frankenstein. In the castle he finds a funny hunchback, a pretty lab assistant and the elderly housekeeper. Young Frankenstein believes that the work of his grandfather was delusional, but when he discovers the book where the mad doctor described his reanimation experiment, he suddenly changes his mind.

A town – where everyone seems to be named Johnson – is in the way of the railroad and, in order to grab their land, Hedley Lemar, a politically connected nasty person, sends in his henchmen to make the town unlivable. After the sheriff is killed, the town demands a new sheriff from the Governor, so Hedley convinces him to send the town the first black sheriff in the west.