A group of kids join a secret agency where they learn to use the power of imagination to journey into the Dream World and create fantastic creations in order to help sleeping children being terrorized by the evil Nightmare King who is bent on conquering the Dream World and invading the Waking World.
Jimmy Neutron is the smartest kid in town. As a genius, Jimmy thinks most things can be solved with the invention of a new gizmo. But Jimmy usually takes the easy way out, and his backfiring gadgets result in comedic adventures.
Two siblings, Max and Emmy, find an enchanted dragon scale capable of transporting them to a whimsical fantasy land inhabited by colorful anthropomorphic dragons by reciting a rhyme. They befriend four friendly dragons Cassie, Ord, Zak, Wheezie and Quetzal.