Sora Tengoku, who is called Dr. Dream by the public, is a simple man possessing a great power--the ability to enter people’s minds and help them sort through their troubles through their dreams. His newest client is a young girl named Alice who cannot sleep because she is being chased by a dragon named Nightmare. But Dr. Dream comes to understand that this is no ordinary dragon--that he has come to invade the living world and use Alice to fulfill his desire for domination of the Earth.