Grandpa is feeling lonely and depressed so he contacts a matrimonial agency to find a mate. The agency sends over a nice looking elderly woman who find Grandpa to be delightful. She turns out to be the Black Widow: she makes her living by marrying her suitors, getting them to sign a life insurance policy naming her as beneficiary, and then murdering them.

Marilyn has insomnia and in a attempt to cure it, Grandpa accidentally gives her a Sleeping Beauty potion instead. Now Marilyn can’t wake up unless she has been kissed by a prince. Lily and Herman advertise for a prince in classified section the newspaper, but this only attracts a couple of out-of-work actors. Meanwhile, Grandpa is negotiating with an oil company for the rights to use his magic pill that turns water into gasoline.

The Munsters have been chosen by Event Magazine as the average American family. Grandpa is insulted by being labelled ""average."" He disappears, jeopardising the family's photo opportunity and the large amount of prize money that came with it. When a journalist and photographer arrive at the Munster home, Herman and Lily think they are burglars.

The Munsters have been chosen by Event Magazine as the average American family. Grandpa is insulted by being labeled “average”. He disappears, jeopardizing the family’s photo opportunity and the large amount of prize money that came with it. When a journalist and photographer arrive at the Munster home, Herman and Lily think they are burglars.

After Herman attends an office party that goes on until the wee hours of the morning, Lily locks Herman out of their bedroom and makes him sleep on the sofa. When they are unable to reconcile, Lily and Herman each see a marriage counselor independently.

Eddie volunteers Herman as a performer for his school’s Talent Night. Since Herman has no discernible talent, Grandpa conjures up a pair of magic ballet shoes that will transform whoever wears them into a gifted dancer. But Herman is uneasy about strapping on this footwear. Fortunately, Eddie already has him billed as the world’s greatest magician.

When Eddie is called Lead Foot by the other kids on his track team, Herman offers to become his athletic coach. While demonstrating his out-of-this-world prowess in shot put, discus-throwing and pole-vaulting, Herman causes untold destruction and makes a fool of himself. Grandpa decides to come to the rescue by creating a magic speed pill that will make Eddie a champion runner.

To provide poor unfortunate Marilyn with a future husband, Grandpa tries to turn a frog into a prince. Conveniently, he chooses a nearsighted frog who won’t be put off by Marilyn’s hideous looks. Not realizing that the potion has failed, Grandpa and Herman mistake a passing stranger for their princely frog.

Herman buys a convertible for Marilyn from a fly-by-night used-car dealer named Fair Deal Dan. Once he gets it home, it explodes into a piece of junk. Herman later finds out that the car is a stolen piece of junk when he is placed under arrest.