You control a small boy (Nemo) inside his dreams as he journeys to Slumberland. Feeding candy to animals, such as a frog, gorilla, bee, and mole allows you to either ride them or get a costume based on the animal.

As you travel through Nemo's dreams to save the Slumber King (Morpheus) from the evil Nightmare King, you'll travel through many dreamworlds collecting keys to proceed. These dreams include The House of Toys, Cloud Ruins, and Nemo's House.