It is Halloween night at the House of Mouse, and a lot of villains are showing up. Jafar has a trick in store for the usual heroes of the House, but the villains have to wait until midnight for him to unleash it.
After a series of cartoons, Jafar, along with Captain Hook, Maleficent, Cruella de Vil, Ursula and Hades, takes over the house with a musical number "It's Our House Now!" All the other villains soon join the gang. The heroes are trapped in the kitchen while Mickey and several others are thrown out into the street. They witness the House's name being changed to the House of Villains.
Mickey, Donald, Goofy and Minnie try to take their House back, but Chernabog keeps them from entering the building. Then, Mickey dresses in his sorcerer outfit from Fantasia (and Fantasia 2000) and challenges Jafar to a magical duel using fireballs. Just when Mickey's sorcerer hat is knocked off, Aladdin escapes from the kitchen, flying on the magic carpet and gives Daisy Duck the magical lamp. Daisy hands it to Mickey who uses the lamp to suck Jafar into it. The rest of the villains flee and the House of Mouse is restored.