Collects Moon Girl and Devil Dinosaur #37-42. Bad dreams for Moon Girl and Devil Dinosaur! Eight hours of sleep usually means a full night's rest — but now Lunella and Devil face a fight to stay out of the Dream Dimension, a place at the edge of our subconscious where all manner of monsters dwell! What fearsome fiends lay within the unconscious mind of a 65-million-year-old thunder lizard? Or worse yet, a 9-year-old super-genius?! As Moon Girl and Devil traverse the Dreamscape, all is revealed about their host, Bad Dream — and he isn't what you think! Doctor Strange lends a mystic hand, and Lunella's adventures in slumberland catch the attention of the sultan of snoozetime, Sleepwalker! But the team-ups don't end there. Lunella is about to meet the original kid hero himself: Spider-Man!