When Mickey falls asleep reading Lewis Carroll's Alice Through the Looking Glass, he dreams he travels through his own mirror into a backward version of his house. After meeting some of its strange inhabitants, he eats a walnut that was thrown at him by a pair of pliers. The nut ends up rapidly growing him to the size of the house, and then rapidly shrinks him down to a size perfect for dancing with a telephone, a pair of gloves, and a deck of playing cards. However, when the King of Hearts sees Mickey dancing with his Queen, he becomes jealous and sends the cards after him. After an exciting chase, Mickey escapes back through the mirror and wakes up in the safety of his normal house.
- Mickey Mouse (voiced by Walt Disney)
- Clothes Hanger
- Nutcracker Tool
- Glove #1
- Glove #2
- Joker Card
- King Card
- Queen Card
- King Neptune (cameo)
- The King of Hearts is a caricature of Charles Laughton’s Academy Award-Winning portrayal of King Henry VIII in the 1933 film The Private Life of Henry VIII.
- The Queen of Hearts is a caricature of famous movie actress Greta Garbo.
- When Mickey first steps into the Mirror World, a footstool that acts like a dog can be seen. Said footstool may have been the inspiration for Sultan that appeared in Beauty and the Beast.
- There is a tribute to this film in the "Friend Like Me" scene of Aladdin, where Genie briefly dances with two oversized Genie hands in a similar manner to the way Mickey dances with the gloves in this cartoon.
- The exact scene with Mickey dancing with the gloves also appeared during the Aladdin part of the bubble montage from the Florida version of Fantasmic!
- This short would become the basis of the plot for the GameCube video game Disney's Magical Mirror Starring Mickey Mouse. At certain points, the game's cinematics (including the opening cutscene) replicate animation seen in the cartoon.
- The opening scene of this short was replicated again in the opening cinematic of Epic Mickey. This short is also a transitional level in the game.
- The short was added as a bonus feature on all of the DVD releases of Alice in Wonderland since 2000.
- The music playing when Mickey is dancing with his two oversized gloves was used as background music at the end of tapes in the Walt Disney Mini Classics series, listing all of the other titles in the series.
- The scene where Mickey dances with his hands in his pockets was reused in the Disney Channel closing logo around 1997 to 2002.
- Disneyland, episode #3.8: "The Plausible Impossible"
- The Mouse Factory, episode #2.10: "Mickey Mouse"
- Good Morning, Mickey, episode #4
- Donald Duck Presents, episode #8
- Mickey's Mouse Tracks, episode #52
- Donald's Quack Attack, episode #1
- The Ink and Paint Club, episode #1.50: "Storyteller Mickey"
- Have a Laugh!, episode #24
- Treasures from the Disney Vault, June 28, 2016
- Mickey Mouse and Donald Duck Cartoon Collections, Volume One
- Mickey's Magical World (edited)
- The Spirit of Mickey
- Everybody Loves Mickey
- Walt Disney Treasures: Mickey Mouse in Living Color
- Alice in Wonderland: The Masterpiece Edition
- Walt Disney Animation Collection: Classic Short Films, Vol. 1: Mickey and the Beanstalk
- Alice in Wonderland: Special Un-Anniversary Edition
- Everybody Loves Mickey
- Alice in Wonderland: 60th Anniversary Edition
- Celebrating Mickey
Have a Laugh! changes
The following scenes were deleted from the short release due to time constraints:
- The armchair stroking the dog-like footstool and the latter barking at Mickey as he reaches out to touch it.
- Mickey's run-in with a grumpy umbrella.
- Mickey shrinking from the nut is heavily edited, cutting out him growing to giant size before shrinking abruptly.
- All scenes with Mickey's argument with the phone, his entire Astaire-like dance first on the top hat and then with a pair of gloves, and his march with the cards are cut; it shows the radio starting to play the lively number and then cuts to Mickey dancing with the Queen of Hearts card.
- Mickey's duel with the King of Hearts card is cut completely, as well as the latter calling his army of cards; it cuts from the King drawing his swords to the radio "calling all cards".
- Mickey's run from the cards is partially edited: his colliding with a book, his trying to fend them off with a fountain pen, and his trying to hide from them in a sock are all cut.
- The sentient phone calling the police.
- Mickey running across the globe is partially edited, and his falling in its waters and subsequent ejection by King Neptune are cut.