High up in the sky, very close to the moon, there is a place called Dreamland. That's where all our dreams live after we wake up. That's where Sandman lives, who sends us into a new dream every night. But now Dreamlandia is in danger! Nightmares have decided to take over the wonderful planet and establish their own order on it. And... How awful! They've decided to steal Sandman's sleeping powder! And if they succeed in this atrocity, the people on Earth are forever doomed to have only horrible nightmares in their sleep...