Around the world, children are disappearing and the culprits are not of this world! The evil Queen Badianier plots to trap Earth in a dark energy field called the Black Dream Hole, powered by the sweet, sugar energy produced from the dreams of children. Meanwhile, Chibi-Usa befriends Perle, a new kid who seems to have grown fond of the town's warm and friendly atmosphere. Their peace is short lived when they find the town's children suddenly start sleep-walking out of their homes, including Chibi-Usa! Sailor Moon, Perle, and the Sailor Guardians must now fight to save the lost children before the enemy can place the world into an eternal sleep that's definitely not sweet!