In an isolated, imaginary world, gigantic worms represent every possible emotion, rhyming words breed unforeseen, treacherous powers, and four magical girls who can't get along even to save the world are running the government. Beamo, a happy-go-lucky magician and politician, has been taken into custody for trying to forcefully unite all creatures, including unpredictable worm monsters, while Sulley, her cold-blooded counterpart, plots a wicked new world order that requires heartless choices.