The Realm of Fantasy  is a world populated with mythical beasts, knights, and wizards much like a fairy tale.
The Realm of Fantasy came under threat of tyrannical rule by the evil wizard Orlox. He attempted to complete a potion that would make him invincible and thus, able to rule his kingdom forever. The potion neared completion and required only a dragon's heart. The Last Dragon fled the Realm of Fantasy and ended up in the basement of the Firehouse. Two Ogre Knights followed and kidnapped Janine Melnitz instead. The Ghostbusters, Slimer and the dragon took a portal to the Realm in search of Janine. In order to fool Orlox into granted them access to his castle, the Ghostbusters and Slimer dressed as knights. In the climactic battle, Orlox was trapped and the castle was restored to its former glory.
- ↑ Last Dragon (2009). The Real Ghostbusters - "Surely You Joust" (1989) (DVD ts. 06:21-06:24). Time Life Entertainment. Dragon says: "In my world, the Realm of Fantasy, I am the last dragon."