Mickey Mouse, Donald Duck, Goofy, and Mickey's dog Pluto are street urchins, who, while being robbed by masked bandits (played by the Beagle Boys) are saved by the Royal Musketeers, Athos, Aramis, Porthos and D'Artagnan. Mickey is gifted one of their hats, inspiring him to follow their example and become a musketeer; however, in the present day, he, Donald and Goofy are janitors for the musketeers' base.
In Mickey's Mellerdrammer, Mickey Mouse, Minnie Mouse, Goofy (known then as Dippy Dawg) and others present their own low budget light-hearted rendition of the 19th century Tom Shows for a crowd in a barn converted into a theater for the occasion.
Mickey Mouse's orchestra is performing a concert at the park. As the film opens they are being applauded for having just played music from Zampa. They next begin Rossini's William Tell overture.
Mickey Mouse, Donald Duck, and Goofy are firefighters responding to a hotel fire. Mickey drives a contemporary style hook-and-ladder fire truck, Donald is standing on the stack a ladders on the truck shouting "Fire! Fire! Fire!", while Goofy is steering the rear of the truck.
Mickey, Donald, and Goofy are assigned to clean a tall clock tower. Mickey is outside cleaning the face with a mop by riding on the second hand. Goofy is inside the building cleaning gear teeth with a large toothbrush. Donald (singing "Hickory Dickory Dock") starts to mop the mainspring, ignoring several warning signs. He gets the mop caught and springs it loose.
In this short, Mickey Mouse and his friends Donald Duck and Goofy attempt to build a boat (which they name Queen Minnie), which is made from fold-out parts (the instructions simply say "All You Do Is Put It Together" and "Even A Child Can Do It"), though they encounter problems of their own as they go (e.g. Donald paints the rudder which keeps being turned by Mickey, and Goofy thinks the figurehead is an actual woman). Their maiden voyage turns out to be their last, as the boat collapses as she sets sail, thanks to Minnie Mouse hitting the champagne bottle (to christen the boat) just too hard on the boat.
The story starts off in New York City setting sometime after the first movie (which began in 1885) presumably between 1886 and 1889, as Fievel and Tony discover that an ancient treasure lies underneath Manhattan when snooping around an abandoned subway (the Beach Pneumatic Transit system) and stumbling upon the remains of a dead mouse clutching a treasure map, deciding they must find it with the help of an archaeologist Tony knows: Dr. Dithering, along with fighting five villains as well.
Fievel, his friend, Tony and his sister, Tanya all get jobs at the local newspaper, where the audience is introduced to Nellie, who wants to be an important reporter, but only gets small assignments, as if she were a secretary to Reed, the newspaper's editor. Throughout the film, Tanya tries to win Reed's heart, while Tony tries to get noticed by Reed and promoted to a reporter. Like in the previous movies, where a mouse installation is directly below its human installation counterpart, the newspaper offices the mice work in is directly underneath the newspaper offices the humans work in.
A snowstorm leaves everyone in the House of Mouse stranded and "bah-humbug" Donald doesn't have any Christmas spirit. Mickey and all the other guests get hot chocolate and cookies to make Donald feel his Christmas spirit. The fun starts when Minnie gets the Christmas cartoons to watch. Their magical memories see to it that everyone has a holiday spirit, even Donald. At the end, everyone gets together and sings a musical number, "The Best Christmas of All".
The short begins with a female moose (with blond curly hair and antlers oddly enough) wading through a lake. Other odd things that make this moose strange is that she sounds her mating call with a horn and her legs are strangely familiar. The legs' owners are Donald and Goofy, disguised in a moose costume. Following them is Mickey, sounding his own moose call while being disguised as a shrub on stilts. Goofy's call is answered by an actual moose, causing him and Donald to excitedly shout " A moose!" Mickey tells them to "do their stuff" so he can shoot the moose with his shotgun. So, the duo go off to track down a moose.
Mickey Mouse and Pluto are camping in the woods about to set out hunting. Mickey reads to Pluto from an instructional book how to point at game and not move. Mickey promises that if they are successful they will have "quail on toast, and maybe a nice big juicy bear steak" that night. They then set out into the forest, Mickey carrying a shotgun.
Mickey conducts a radio orchestra who performs the Light Cavalry Overture (by Franz von Suppé). The sponsor (Pegleg Pete as Mr. Sylvester Macaroni) loves the rehearsal and agrees to have it shown in concert.
Stuart and his family (and Monty who stows away in the car) are going camping. When they get there, Stuart meets a smooth-talking skunk named Reeko who is forced to give food to "The Beast". Stuart and George join the "Lake Scouts" which Stuart has trouble in. But Reeko makes a deal with The Beast, resulting in Snowbell getting captured by him and Stuart goes off on an adventure to save him. Eventually, Stuart and his friends attempt trick the Beast into falling into a trap covered with sticks and leaves which doesn't work. Reeko shows up with a group of forest animals. Reeko taunts the Beast and the Beast roars at him. Reeko turns around, yells a battle cry, and sprays the Beast with all of his might. The Beast is taken away to a zoo and Stuart earns a gold kerchief at last. Reeko tells Stuart that he (Reeko) was wrong to betray him. Stuart bids farewell to his friends as he, George, Eleanor, Frederick, Snowbell, and Monty head back home and live happily ever after.
Get a Horse! follows Mickey, his favorite gal pal Minnie Mouse and their friends Horace Horsecollar and Clarabelle Cow as they delight in a musical wagon ride – until Peg-Leg Pete shows up and tries to run them off the road. Mickey and Horace are forced through the movie screen into the theater, emerging as color, CGI version of themselves. Mickey proceeds to do battle with Pete on both sides of the screen, enlisting the aid of Horace (who had briefly left the theater to get modern concessions and 'borrow' a smartphone). They outwit Pete by flipping the screen on different axes to alternately change the flow of gravity and of time, causing Pete to repeatedly injure himself on the same objects. Finally, the movie screen falls apart, revealing a modern CGI landscape, and the now modernized Disney characters return to the film, fading out in time for Pete to get stuck in the iris.
A hooded figure walks past a church on a snowy night carrying a covered basket. The Christmas carol "Silent Night" is heard coming from the church, setting the time of year. The figure then approaches Mickey Mouse's house and peeks in the window: Minnie is playing "Silent Night" on an organ, Mickey is decorating a Christmas tree, and Pluto is peaceful sleeping by the fire. The figure then leaves the basket on Mickey's doorstep, rings the bell, and walks away.