Mr. Wilson's former employers offer him an executive position at his old company, but it will require him to relocate to Pittsburgh, PA.

Mr. Wilson is nervous about hosting his niece's upcoming wedding, especially since Dennis is going to be the ring bearer.

While watching an auction from the sidewalk, Dennis causes Mr. Wilson to raise his hand when an old-fashioned radio is being auctioned.

One of Dennis' friends gives him a pet in a cage that he says is a hamster. The animal escapes from the cage and everyone finds out it is really a gopher when Mr. Wilson's yard is nearly destroyed.

When George gives away books, he includes a book that holds a stock certificate worth $500. He tries to get the book back, but it is too late. Dennis saves the day when he realizes he found the stock and kept it because it looked neat!

With his father away on a business trip and his mother sick in bed with a cold, Dennis has to be the "man of the house." This includes doing laundry with Margaret's help and arranging a dinner party with his friends in connection with a sales pitch.

Dennis starts collecting rocks to build a collection. He finds some rocks that he thinks are real gold.

Henry has plans to play golf which means Dennis has free time which he wants to spend with George. George convinces Henry to not play golf, hoping it means Henry will spend time with Dennis.

The town holds a Paint-up, clean-up week campaign and everyone spruces up their place. Dennis gets into the act with paint from Mr. Wilson to paint his red wagon. Dennis paints the wagon and the street corner. Mr. Wilson gets blamed.

Both Dennis and Mr. Wilson are ashamed that they have never learned to whistle, and try everything they can think of, including eating very sour cherries, to be able to do so.

Mr. Wilson's lodge is raising money by selling raffle tickets to win a car. Dennis buys a ticket because he thinks his mother should get a car.

Dennis wants more money to buy things he wants, so he asks for his father for an allowance. His father agrees, as long as he works for his money. Giving Dennis money without his help seems cheaper in the long run.

Dennis wants more money to buy things he wants, so he asks his father for an allowance. his father agrees, as long as he works for his money. Giving Dennis money without his help seems cheaper in the long run.

Mr. Wilson comes up with another plan to keep Dennis in his own house and away from Mr. Wilson. He shows Dennis how to collect money, but Dennis only bothers everyone for pennies and causes Mr. Wilson to get arrested.

Dennis convinces Mr. Wilson to run for park commissioner.

After hearing talk that Miss Cathcart could use a "best friend," Dennis adopts a lost dog from the pound for her. But when the dog's gentlemanly owner shows up at her door to claim the dog, Miss Cathcart thinks he is the "best friend" Dennis told her to expect.

To prove to Mrs. Elkins that he doesn't hate children, Mr. Wilson goes to great lengths to be kind to Dennis and hopefully, he will be chosen as the subject of Dennis' publicly read essay, "My Best Friend."

Tommy does not want his saxophone anymore, so Dennis decides he wants to buy it. Mr. Wilson finds out when Dennis asks his father for the money and tries to talk Henry out of buying it.

While their house is being fumigated, the Wilson's sleepover at the Mitchell's. When Dennis learns that Mr. WIlson has been known to walk in his sleep, he invites all his friends over to see it.

Dennis wants Mr. Wilson to perform as a magician at Dennis' birthday party. Mr. Wilson is reluctant to do so until he learns that actress Spring Bylington will also be at the party.

Mr. Wilson is eager for Dennis to go to summer camp. And when Henry is unexpectedly unable to take Dennis and several of Dennis' friends to visit the camp, Mr. Wilson is happy to step in.

Mr. Wilson has his car trunk open to use the car jack to change a flat tire. While no one is looking, Mrs. Cathcart's cat jumps in and then Dennis closes the trunk.

Alice plans a visit to her parent's home for a few days. Dennis buys her a gift for her trip and hides it in Mr. Wilson's home. Mrs Wilson finds the gift and thinks it is for her.

Dennis wants to get his father a fishing rod for a gift. When he counts the money in a piggy bank, it is not nearly enough. Dennis finds a $50 Confederate bill in the papers from his grandmother and tries to use that.