Dennis thinks his dad is broke so he sells bottles to try and help his dad out. However, when Dennis tells some of the neighbors what he is doing the neighbors get the wrong idea about the Mitchell's and think that they are in trouble financially.

Dennis builds a bench for Mr. Dorfamn to sit on.

Dennis is very upset because he doesn't know how to whistle, So he spends all day trying to learn how.

Mr. Wilson Helps Dennis start a penny collection, However Mr. Wilson fears that Dennis having a penny collection is going to be trouble to him.

Dennis enters a soapbox derby and Mr. Wilson accidently ends up being the one driving it in the race.

Dennis, Henry and Mr. Wilson go out in the woods and cut down a big Christmas tree which ends up getting almost destroyed by the time they get it home.

A big shaggy dog followes Mr. Wilson home and Mr. Wilson tries to get rid of it.

Mr. Quigley coaches Dennis' baseball team with help from Sandy Koufax.

George Wilson's brother John Wilson comes to visit, only he has trouble working without his old cushion.

The Neighborhood Community puts on a carnival in the park with different winning contests to participate in.