The Theory of Evolution

Minnie Mouse knits a sweater for Pluto. When she puts it on him, Pluto does whatever he can to try to get it off, eventually shrinking it to the perfect size for Figaro.

Mickey's going golfing, and Pluto is his caddy. Besides the usual caddy duties, Pluto runs to the ball and points to it. But when the ball lands in a gopher hole, Pluto's got another task: chase the gopher. They eventually chase each other through a number of holes in a knoll where Mickey is trying to putt out, causing the knoll to collapse.

Spike the bulldog, grateful to Jerry for getting him out of the dogcatcher's van, offers to help the little mouse any time he whistles. Tom, Jerry's feline tormentor, seeks to overcome this new disadvantage.

Donald is an admiral on a seagoing voyage with his nephews in which they encounter a ravenous shark.

Tom heads for a big city penthouse to become acquainted with a rich pretty female cat that lives there. He brings her Jerry as a gift and does some humiliating things to Jerry. Jerry, in turn, attracts the attention of another cat who also becomes interested in the female cat. It eventually turns into a fight between Tom and the other cat for the lady's hand but Jerry is the one who gets her in the end.

A narrator explains the history of the Olympic Games while Goofy demonstrates events.

Donald's sister Dumbella sends her three sons Huey, Dewey, and Louie to visit their uncle Donald. They prove to be quite a handful for Donald, even with help from his book on child rearing.

By accident, Cedric (Goofy), replaces his master, Sir Loinsteak, in the armor just before the joust with champion Sir Cumference.

Trixie explains to Forky what a computer does as they experience the common stresses of technology.

A basketball game of Goofs (P.U. vs. U.U.) in which the players play furiously, often breaking the rules of the game. All of the players are named after Disney artists.

In an attempt to convince Minnie that he hasn't forgotten to buy her an anniversary present, Mickey Mouse ends up promising to take her to Hawaii. Funds being short, he applies for a job as lab assistant to the sinister Dr. Frankenollie, who happens to be searching for a donor to provide his monstrous creation with a brain.

Taking all the places on both teams, Goofy demonstrates the game of football with varying results, having problems with the coach and the goal post.