When Mickey falls asleep reading Lewis Carroll’s Through the Looking Glass, he dreams he travels through his own mirror into a backwards version of his house. After meeting some of its strange inhabitants, he eats a nut that 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.
